diff --git a/pkg/front_end/lib/src/fasta/kernel/kernel_target.dart b/pkg/front_end/lib/src/fasta/kernel/kernel_target.dart
index 3ca9a1fd9a9..44c612d2926 100644
--- a/pkg/front_end/lib/src/fasta/kernel/kernel_target.dart
+++ b/pkg/front_end/lib/src/fasta/kernel/kernel_target.dart
@@ -506,7 +506,8 @@ class KernelTarget extends TargetImplementation {
   Constructor makeDefaultConstructor() {
     return new Constructor(
         new FunctionNode(new EmptyStatement(), returnType: const VoidType()),
-        name: new Name(""));
+        name: new Name(""),
+        isSyntheticDefault: true);
   }
 
   void finishAllConstructors() {
diff --git a/pkg/front_end/testcases/DeltaBlue.dart.outline.expect b/pkg/front_end/testcases/DeltaBlue.dart.outline.expect
index e97314d9d87..c668666a93a 100644
--- a/pkg/front_end/testcases/DeltaBlue.dart.outline.expect
+++ b/pkg/front_end/testcases/DeltaBlue.dart.outline.expect
@@ -3,7 +3,7 @@ import self as self;
 import "dart:core" as core;
 
 class DeltaBlue extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     ;
   method run() → void
     ;
@@ -151,7 +151,7 @@ class Variable extends core::Object {
 }
 class Planner extends core::Object {
   field core::int currentMark;
-  constructor •() → void
+  default constructor •() → void
     ;
   method incrementalAdd(self::Constraint c) → void
     ;
@@ -172,7 +172,7 @@ class Planner extends core::Object {
 }
 class Plan extends core::Object {
   field core::List<self::Constraint> list;
-  constructor •() → void
+  default constructor •() → void
     ;
   method addConstraint(self::Constraint c) → void
     ;
diff --git a/pkg/front_end/testcases/accessors.dart.direct.expect b/pkg/front_end/testcases/accessors.dart.direct.expect
index 8e0409a8396..4d27552bc31 100644
--- a/pkg/front_end/testcases/accessors.dart.direct.expect
+++ b/pkg/front_end/testcases/accessors.dart.direct.expect
@@ -3,7 +3,7 @@ import self as self;
 import "dart:core" as core;
 
 class C extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
   set onlySetter(dynamic value) → void {
@@ -25,7 +25,7 @@ class C extends core::Object {
   }
 }
 class D extends self::C {
-  constructor •() → void
+  default constructor •() → void
     : super self::C::•()
     ;
   get onlySetter() → core::String
diff --git a/pkg/front_end/testcases/accessors.dart.outline.expect b/pkg/front_end/testcases/accessors.dart.outline.expect
index 0003ea1782f..3a6317ea496 100644
--- a/pkg/front_end/testcases/accessors.dart.outline.expect
+++ b/pkg/front_end/testcases/accessors.dart.outline.expect
@@ -3,7 +3,7 @@ import self as self;
 import "dart:core" as core;
 
 class C extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     ;
   set onlySetter(dynamic value) → void
     ;
@@ -13,7 +13,7 @@ class C extends core::Object {
     ;
 }
 class D extends self::C {
-  constructor •() → void
+  default constructor •() → void
     ;
   get onlySetter() → core::String
     ;
diff --git a/pkg/front_end/testcases/argument.dart.direct.expect b/pkg/front_end/testcases/argument.dart.direct.expect
index 27c776c0b47..bade0cb28e6 100644
--- a/pkg/front_end/testcases/argument.dart.direct.expect
+++ b/pkg/front_end/testcases/argument.dart.direct.expect
@@ -3,22 +3,22 @@ import self as self;
 import "dart:core" as core;
 
 abstract class Base extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
 }
 class Foo extends self::Base {
-  constructor •() → void
+  default constructor •() → void
     : super self::Base::•()
     ;
 }
 class Bar extends self::Base {
-  constructor •() → void
+  default constructor •() → void
     : super self::Base::•()
     ;
 }
 class Baz extends self::Base {
-  constructor •() → void
+  default constructor •() → void
     : super self::Base::•()
     ;
 }
diff --git a/pkg/front_end/testcases/argument.dart.outline.expect b/pkg/front_end/testcases/argument.dart.outline.expect
index b270ee0d1e4..525fe92783d 100644
--- a/pkg/front_end/testcases/argument.dart.outline.expect
+++ b/pkg/front_end/testcases/argument.dart.outline.expect
@@ -3,19 +3,19 @@ import self as self;
 import "dart:core" as core;
 
 abstract class Base extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     ;
 }
 class Foo extends self::Base {
-  constructor •() → void
+  default constructor •() → void
     ;
 }
 class Bar extends self::Base {
-  constructor •() → void
+  default constructor •() → void
     ;
 }
 class Baz extends self::Base {
-  constructor •() → void
+  default constructor •() → void
     ;
 }
 static method foo(dynamic x) → void
diff --git a/pkg/front_end/testcases/argument.dart.strong.expect b/pkg/front_end/testcases/argument.dart.strong.expect
index 27c776c0b47..bade0cb28e6 100644
--- a/pkg/front_end/testcases/argument.dart.strong.expect
+++ b/pkg/front_end/testcases/argument.dart.strong.expect
@@ -3,22 +3,22 @@ import self as self;
 import "dart:core" as core;
 
 abstract class Base extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
 }
 class Foo extends self::Base {
-  constructor •() → void
+  default constructor •() → void
     : super self::Base::•()
     ;
 }
 class Bar extends self::Base {
-  constructor •() → void
+  default constructor •() → void
     : super self::Base::•()
     ;
 }
 class Baz extends self::Base {
-  constructor •() → void
+  default constructor •() → void
     : super self::Base::•()
     ;
 }
diff --git a/pkg/front_end/testcases/bad_store.dart.direct.expect b/pkg/front_end/testcases/bad_store.dart.direct.expect
index 06f7dd5e077..f0c2a4b486d 100644
--- a/pkg/front_end/testcases/bad_store.dart.direct.expect
+++ b/pkg/front_end/testcases/bad_store.dart.direct.expect
@@ -4,7 +4,7 @@ import "dart:core" as core;
 
 class Foo extends core::Object {
   field dynamic field = null;
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
 }
diff --git a/pkg/front_end/testcases/bad_store.dart.outline.expect b/pkg/front_end/testcases/bad_store.dart.outline.expect
index 82a2a78b58c..fd4caa9b29d 100644
--- a/pkg/front_end/testcases/bad_store.dart.outline.expect
+++ b/pkg/front_end/testcases/bad_store.dart.outline.expect
@@ -4,7 +4,7 @@ import "dart:core" as core;
 
 class Foo extends core::Object {
   field dynamic field;
-  constructor •() → void
+  default constructor •() → void
     ;
 }
 static method identity(dynamic x) → dynamic
diff --git a/pkg/front_end/testcases/bad_store.dart.strong.expect b/pkg/front_end/testcases/bad_store.dart.strong.expect
index 161e6a5f8ca..752a3b6deca 100644
--- a/pkg/front_end/testcases/bad_store.dart.strong.expect
+++ b/pkg/front_end/testcases/bad_store.dart.strong.expect
@@ -4,7 +4,7 @@ import "dart:core" as core;
 
 class Foo extends core::Object {
   field dynamic field = null;
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
 }
diff --git a/pkg/front_end/testcases/call.dart.direct.expect b/pkg/front_end/testcases/call.dart.direct.expect
index 5ef0d8316e2..7242d06c0bf 100644
--- a/pkg/front_end/testcases/call.dart.direct.expect
+++ b/pkg/front_end/testcases/call.dart.direct.expect
@@ -3,7 +3,7 @@ import self as self;
 import "dart:core" as core;
 
 class Callable extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
   method call(dynamic x) → dynamic {
@@ -11,7 +11,7 @@ class Callable extends core::Object {
   }
 }
 class CallableGetter extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
   get call() → dynamic
diff --git a/pkg/front_end/testcases/call.dart.outline.expect b/pkg/front_end/testcases/call.dart.outline.expect
index c9559d4e94d..1f09e9292cd 100644
--- a/pkg/front_end/testcases/call.dart.outline.expect
+++ b/pkg/front_end/testcases/call.dart.outline.expect
@@ -3,13 +3,13 @@ import self as self;
 import "dart:core" as core;
 
 class Callable extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     ;
   method call(dynamic x) → dynamic
     ;
 }
 class CallableGetter extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     ;
   get call() → dynamic
     ;
diff --git a/pkg/front_end/testcases/call.dart.strong.expect b/pkg/front_end/testcases/call.dart.strong.expect
index 7cc1cc55cb7..7c24a917495 100644
--- a/pkg/front_end/testcases/call.dart.strong.expect
+++ b/pkg/front_end/testcases/call.dart.strong.expect
@@ -3,7 +3,7 @@ import self as self;
 import "dart:core" as core;
 
 class Callable extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
   method call(dynamic x) → dynamic {
@@ -11,7 +11,7 @@ class Callable extends core::Object {
   }
 }
 class CallableGetter extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
   get call() → dynamic
diff --git a/pkg/front_end/testcases/closure.dart.direct.expect b/pkg/front_end/testcases/closure.dart.direct.expect
index 364fb6feb10..b4b5082f895 100644
--- a/pkg/front_end/testcases/closure.dart.direct.expect
+++ b/pkg/front_end/testcases/closure.dart.direct.expect
@@ -4,12 +4,12 @@ import "dart:core" as core;
 
 class Foo extends core::Object {
   field dynamic _field = new self::Bar::•();
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
 }
 class Bar extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
 }
diff --git a/pkg/front_end/testcases/closure.dart.outline.expect b/pkg/front_end/testcases/closure.dart.outline.expect
index 8d55a00b800..07bada7d042 100644
--- a/pkg/front_end/testcases/closure.dart.outline.expect
+++ b/pkg/front_end/testcases/closure.dart.outline.expect
@@ -4,11 +4,11 @@ import "dart:core" as core;
 
 class Foo extends core::Object {
   field dynamic _field;
-  constructor •() → void
+  default constructor •() → void
     ;
 }
 class Bar extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     ;
 }
 static method useCallback(dynamic callback) → dynamic
diff --git a/pkg/front_end/testcases/closure.dart.strong.expect b/pkg/front_end/testcases/closure.dart.strong.expect
index 01ba4e5a766..465bcdcde5b 100644
--- a/pkg/front_end/testcases/closure.dart.strong.expect
+++ b/pkg/front_end/testcases/closure.dart.strong.expect
@@ -4,12 +4,12 @@ import "dart:core" as core;
 
 class Foo extends core::Object {
   field self::Bar _field = new self::Bar::•();
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
 }
 class Bar extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
 }
diff --git a/pkg/front_end/testcases/covariant_generic.dart.strong.expect b/pkg/front_end/testcases/covariant_generic.dart.strong.expect
index 1e99fae14bc..cf4a1f65f69 100644
--- a/pkg/front_end/testcases/covariant_generic.dart.strong.expect
+++ b/pkg/front_end/testcases/covariant_generic.dart.strong.expect
@@ -15,12 +15,6 @@ class Foo<T extends core::Object> extends core::Object {
   method withCallback((self::Foo::T) → void callback) → void {
     callback.call(this.{self::Foo::finalField});
   }
-  set mutableField$cc(core::Object mutableField_) → dynamic
-    this.{=self::Foo::mutableField} = mutableField_ as self::Foo::T;
-  method method$cc(core::Object x) → void
-    this.{=self::Foo::method}(x as self::Foo::T);
-  set setter$cc(core::Object x) → void
-    this.{=self::Foo::setter} = x as self::Foo::T;
 }
 static method main() → dynamic {
   self::Foo<core::int> fooInt = new self::Foo::•<core::int>(1, (core::int x) → core::Null {});
diff --git a/pkg/front_end/testcases/cycles.dart.direct.expect b/pkg/front_end/testcases/cycles.dart.direct.expect
index 950f38228bd..fdeae6e5880 100644
--- a/pkg/front_end/testcases/cycles.dart.direct.expect
+++ b/pkg/front_end/testcases/cycles.dart.direct.expect
@@ -3,22 +3,22 @@ import self as self;
 import "dart:core" as core;
 
 class A extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
 }
 class B extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
 }
 class C extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
 }
 class D extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
 }
diff --git a/pkg/front_end/testcases/cycles.dart.outline.expect b/pkg/front_end/testcases/cycles.dart.outline.expect
index 94caec38bba..379e84ced0e 100644
--- a/pkg/front_end/testcases/cycles.dart.outline.expect
+++ b/pkg/front_end/testcases/cycles.dart.outline.expect
@@ -3,19 +3,19 @@ import self as self;
 import "dart:core" as core;
 
 class A extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     ;
 }
 class B extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     ;
 }
 class C extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     ;
 }
 class D extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     ;
 }
 static method main() → dynamic
diff --git a/pkg/front_end/testcases/escape.dart.direct.expect b/pkg/front_end/testcases/escape.dart.direct.expect
index 23706906e37..db642e8e5b8 100644
--- a/pkg/front_end/testcases/escape.dart.direct.expect
+++ b/pkg/front_end/testcases/escape.dart.direct.expect
@@ -4,18 +4,18 @@ import "dart:core" as core;
 
 class A extends core::Object {
   field dynamic field = null;
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
 }
 class B extends core::Object {
   field dynamic field = null;
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
 }
 class C extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
   operator ==(dynamic x) → dynamic
@@ -23,7 +23,7 @@ class C extends core::Object {
 }
 class X extends core::Object implements self::A, self::B {
   field dynamic field = null;
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
 }
diff --git a/pkg/front_end/testcases/escape.dart.outline.expect b/pkg/front_end/testcases/escape.dart.outline.expect
index 916979cee4d..6b5cf2f1ca6 100644
--- a/pkg/front_end/testcases/escape.dart.outline.expect
+++ b/pkg/front_end/testcases/escape.dart.outline.expect
@@ -4,23 +4,23 @@ import "dart:core" as core;
 
 class A extends core::Object {
   field dynamic field;
-  constructor •() → void
+  default constructor •() → void
     ;
 }
 class B extends core::Object {
   field dynamic field;
-  constructor •() → void
+  default constructor •() → void
     ;
 }
 class C extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     ;
   operator ==(dynamic x) → dynamic
     ;
 }
 class X extends core::Object implements self::A, self::B {
   field dynamic field;
-  constructor •() → void
+  default constructor •() → void
     ;
 }
 static method useAsA(self::A object) → void
diff --git a/pkg/front_end/testcases/escape.dart.strong.expect b/pkg/front_end/testcases/escape.dart.strong.expect
index ff16c94a3c9..5f1812e64e5 100644
--- a/pkg/front_end/testcases/escape.dart.strong.expect
+++ b/pkg/front_end/testcases/escape.dart.strong.expect
@@ -4,19 +4,19 @@ import "dart:core" as core;
 
 class A extends core::Object {
   field dynamic field = null;
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
 }
 class B extends core::Object {
   field dynamic field = null;
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
 }
 class X extends core::Object implements self::A, self::B {
   field dynamic field = null;
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
 }
diff --git a/pkg/front_end/testcases/implicit_scope_test.dart.direct.expect b/pkg/front_end/testcases/implicit_scope_test.dart.direct.expect
index 09814367229..5700e18bf92 100644
--- a/pkg/front_end/testcases/implicit_scope_test.dart.direct.expect
+++ b/pkg/front_end/testcases/implicit_scope_test.dart.direct.expect
@@ -4,7 +4,7 @@ import "dart:core" as core;
 import "package:expect/expect.dart" as exp;
 
 class ImplicitScopeTest extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
   static method alwaysTrue() → core::bool {
diff --git a/pkg/front_end/testcases/implicit_scope_test.dart.outline.expect b/pkg/front_end/testcases/implicit_scope_test.dart.outline.expect
index 5b631c6e196..6c056aa535e 100644
--- a/pkg/front_end/testcases/implicit_scope_test.dart.outline.expect
+++ b/pkg/front_end/testcases/implicit_scope_test.dart.outline.expect
@@ -3,7 +3,7 @@ import self as self;
 import "dart:core" as core;
 
 class ImplicitScopeTest extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     ;
   static method alwaysTrue() → core::bool
     ;
diff --git a/pkg/front_end/testcases/implicit_scope_test.dart.strong.expect b/pkg/front_end/testcases/implicit_scope_test.dart.strong.expect
index 4094a87e1b5..7849ecf3af5 100644
--- a/pkg/front_end/testcases/implicit_scope_test.dart.strong.expect
+++ b/pkg/front_end/testcases/implicit_scope_test.dart.strong.expect
@@ -4,7 +4,7 @@ import "dart:core" as core;
 import "package:expect/expect.dart" as exp;
 
 class ImplicitScopeTest extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
   static method alwaysTrue() → core::bool {
diff --git a/pkg/front_end/testcases/implicit_this.dart.direct.expect b/pkg/front_end/testcases/implicit_this.dart.direct.expect
index 6fb182cdc03..151c48058fa 100644
--- a/pkg/front_end/testcases/implicit_this.dart.direct.expect
+++ b/pkg/front_end/testcases/implicit_this.dart.direct.expect
@@ -3,7 +3,7 @@ import self as self;
 import "dart:core" as core;
 
 class C extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
   method m() → dynamic {
@@ -14,7 +14,7 @@ class C extends core::Object {
   }
 }
 class D extends self::C {
-  constructor •() → void
+  default constructor •() → void
     : super self::C::•()
     ;
   method testD() → dynamic {
diff --git a/pkg/front_end/testcases/implicit_this.dart.outline.expect b/pkg/front_end/testcases/implicit_this.dart.outline.expect
index bff63cc94bd..e6bcc2eaec5 100644
--- a/pkg/front_end/testcases/implicit_this.dart.outline.expect
+++ b/pkg/front_end/testcases/implicit_this.dart.outline.expect
@@ -3,7 +3,7 @@ import self as self;
 import "dart:core" as core;
 
 class C extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     ;
   method m() → dynamic
     ;
@@ -11,7 +11,7 @@ class C extends core::Object {
     ;
 }
 class D extends self::C {
-  constructor •() → void
+  default constructor •() → void
     ;
   method testD() → dynamic
     ;
diff --git a/pkg/front_end/testcases/inference/abstract_class_instantiation.dart.direct.expect b/pkg/front_end/testcases/inference/abstract_class_instantiation.dart.direct.expect
index 0e16b13acb4..dccccaa73e2 100644
--- a/pkg/front_end/testcases/inference/abstract_class_instantiation.dart.direct.expect
+++ b/pkg/front_end/testcases/inference/abstract_class_instantiation.dart.direct.expect
@@ -3,7 +3,7 @@ import self as self;
 import "dart:core" as core;
 
 abstract class C extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
 }
diff --git a/pkg/front_end/testcases/inference/abstract_class_instantiation.dart.outline.expect b/pkg/front_end/testcases/inference/abstract_class_instantiation.dart.outline.expect
index e084a0d102c..ebae97738dc 100644
--- a/pkg/front_end/testcases/inference/abstract_class_instantiation.dart.outline.expect
+++ b/pkg/front_end/testcases/inference/abstract_class_instantiation.dart.outline.expect
@@ -3,7 +3,7 @@ import self as self;
 import "dart:core" as core;
 
 abstract class C extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     ;
 }
 abstract class D<T extends core::Object> extends core::Object {
diff --git a/pkg/front_end/testcases/inference/assign_local.dart.direct.expect b/pkg/front_end/testcases/inference/assign_local.dart.direct.expect
index e51ac1c3e21..1b9f37c27d5 100644
--- a/pkg/front_end/testcases/inference/assign_local.dart.direct.expect
+++ b/pkg/front_end/testcases/inference/assign_local.dart.direct.expect
@@ -3,12 +3,12 @@ import self as self;
 import "dart:core" as core;
 
 class A<T extends core::Object> extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
 }
 class B<T extends core::Object> extends self::A<self::B::T> {
-  constructor •() → void
+  default constructor •() → void
     : super self::A::•()
     ;
 }
diff --git a/pkg/front_end/testcases/inference/assign_local.dart.outline.expect b/pkg/front_end/testcases/inference/assign_local.dart.outline.expect
index 74fdcb368e1..f1275913760 100644
--- a/pkg/front_end/testcases/inference/assign_local.dart.outline.expect
+++ b/pkg/front_end/testcases/inference/assign_local.dart.outline.expect
@@ -3,11 +3,11 @@ import self as self;
 import "dart:core" as core;
 
 class A<T extends core::Object> extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     ;
 }
 class B<T extends core::Object> extends self::A<self::B::T> {
-  constructor •() → void
+  default constructor •() → void
     ;
 }
 static method main() → dynamic
diff --git a/pkg/front_end/testcases/inference/assign_local.dart.strong.expect b/pkg/front_end/testcases/inference/assign_local.dart.strong.expect
index 6014421072b..e3529d7e202 100644
--- a/pkg/front_end/testcases/inference/assign_local.dart.strong.expect
+++ b/pkg/front_end/testcases/inference/assign_local.dart.strong.expect
@@ -3,12 +3,12 @@ import self as self;
 import "dart:core" as core;
 
 class A<T extends core::Object> extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
 }
 class B<T extends core::Object> extends self::A<self::B::T> {
-  constructor •() → void
+  default constructor •() → void
     : super self::A::•()
     ;
 }
diff --git a/pkg/front_end/testcases/inference/call_corner_cases.dart.direct.expect b/pkg/front_end/testcases/inference/call_corner_cases.dart.direct.expect
index a8cb21c1d21..6684a0bce8b 100644
--- a/pkg/front_end/testcases/inference/call_corner_cases.dart.direct.expect
+++ b/pkg/front_end/testcases/inference/call_corner_cases.dart.direct.expect
@@ -3,14 +3,14 @@ import self as self;
 import "dart:core" as core;
 
 class A extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
   method call() → core::int
     return 0;
 }
 class B extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
   get call() → self::A
@@ -19,7 +19,7 @@ class B extends core::Object {
 class D extends core::Object {
   field self::A fieldA = new self::A::•();
   field self::B fieldB = new self::B::•();
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
   get getA() → self::A
diff --git a/pkg/front_end/testcases/inference/call_corner_cases.dart.outline.expect b/pkg/front_end/testcases/inference/call_corner_cases.dart.outline.expect
index cdef0b83491..9e8f12a2778 100644
--- a/pkg/front_end/testcases/inference/call_corner_cases.dart.outline.expect
+++ b/pkg/front_end/testcases/inference/call_corner_cases.dart.outline.expect
@@ -3,13 +3,13 @@ import self as self;
 import "dart:core" as core;
 
 class A extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     ;
   method call() → core::int
     ;
 }
 class B extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     ;
   get call() → self::A
     ;
@@ -17,7 +17,7 @@ class B extends core::Object {
 class D extends core::Object {
   field self::A fieldA;
   field self::B fieldB;
-  constructor •() → void
+  default constructor •() → void
     ;
   get getA() → self::A
     ;
diff --git a/pkg/front_end/testcases/inference/call_corner_cases.dart.strong.expect b/pkg/front_end/testcases/inference/call_corner_cases.dart.strong.expect
index c27f9c332ed..697ee692b58 100644
--- a/pkg/front_end/testcases/inference/call_corner_cases.dart.strong.expect
+++ b/pkg/front_end/testcases/inference/call_corner_cases.dart.strong.expect
@@ -3,14 +3,14 @@ import self as self;
 import "dart:core" as core;
 
 class A extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
   method call() → core::int
     return 0;
 }
 class B extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
   get call() → self::A
@@ -19,7 +19,7 @@ class B extends core::Object {
 class D extends core::Object {
   field self::A fieldA = new self::A::•();
   field self::B fieldB = new self::B::•();
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
   get getA() → self::A
diff --git a/pkg/front_end/testcases/inference/circular_method_inference.dart.direct.expect b/pkg/front_end/testcases/inference/circular_method_inference.dart.direct.expect
index 8742d06733e..d12fe66ca55 100644
--- a/pkg/front_end/testcases/inference/circular_method_inference.dart.direct.expect
+++ b/pkg/front_end/testcases/inference/circular_method_inference.dart.direct.expect
@@ -3,13 +3,13 @@ import self as self;
 import "dart:core" as core;
 
 abstract class A extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
   abstract method f(dynamic x) → dynamic;
 }
 abstract class B extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
   abstract method f(dynamic x) → dynamic;
diff --git a/pkg/front_end/testcases/inference/circular_method_inference.dart.outline.expect b/pkg/front_end/testcases/inference/circular_method_inference.dart.outline.expect
index 7b4ecbed664..2f1082d5fcd 100644
--- a/pkg/front_end/testcases/inference/circular_method_inference.dart.outline.expect
+++ b/pkg/front_end/testcases/inference/circular_method_inference.dart.outline.expect
@@ -3,12 +3,12 @@ import self as self;
 import "dart:core" as core;
 
 abstract class A extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     ;
   abstract method f(dynamic x) → dynamic;
 }
 abstract class B extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     ;
   abstract method f(dynamic x) → dynamic;
 }
diff --git a/pkg/front_end/testcases/inference/circular_method_inference.dart.strong.expect b/pkg/front_end/testcases/inference/circular_method_inference.dart.strong.expect
index 8742d06733e..d12fe66ca55 100644
--- a/pkg/front_end/testcases/inference/circular_method_inference.dart.strong.expect
+++ b/pkg/front_end/testcases/inference/circular_method_inference.dart.strong.expect
@@ -3,13 +3,13 @@ import self as self;
 import "dart:core" as core;
 
 abstract class A extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
   abstract method f(dynamic x) → dynamic;
 }
 abstract class B extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
   abstract method f(dynamic x) → dynamic;
diff --git a/pkg/front_end/testcases/inference/conflicts_can_happen.dart.strong.expect b/pkg/front_end/testcases/inference/conflicts_can_happen.dart.strong.expect
index cc56e19a9d1..ece81ceb907 100644
--- a/pkg/front_end/testcases/inference/conflicts_can_happen.dart.strong.expect
+++ b/pkg/front_end/testcases/inference/conflicts_can_happen.dart.strong.expect
@@ -4,37 +4,37 @@ import "dart:core" as core;
 
 class I1 extends core::Object {
   field core::int x = null;
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
 }
 class I2 extends self::I1 {
   field core::int y = null;
-  constructor •() → void
+  default constructor •() → void
     : super self::I1::•()
     ;
 }
 class A extends core::Object {
   final field self::I1 a = null;
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
 }
 class B extends core::Object {
   final field self::I2 a = null;
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
 }
 class C1 extends core::Object implements self::A, self::B {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
   get a() → dynamic
     return null;
 }
 class C2 extends core::Object implements self::B, self::A {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
   get a() → dynamic
diff --git a/pkg/front_end/testcases/inference/conflicts_can_happen2.dart.strong.expect b/pkg/front_end/testcases/inference/conflicts_can_happen2.dart.strong.expect
index 55d90f99d85..cc41ea36470 100644
--- a/pkg/front_end/testcases/inference/conflicts_can_happen2.dart.strong.expect
+++ b/pkg/front_end/testcases/inference/conflicts_can_happen2.dart.strong.expect
@@ -4,44 +4,44 @@ import "dart:core" as core;
 
 class I1 extends core::Object {
   field core::int x = null;
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
 }
 class I2 extends core::Object {
   field core::int y = null;
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
 }
 class I3 extends core::Object implements self::I1, self::I2 {
   field core::int x = null;
   field core::int y = null;
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
 }
 class A extends core::Object {
   final field self::I1 a = null;
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
 }
 class B extends core::Object {
   final field self::I2 a = null;
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
 }
 class C1 extends core::Object implements self::A, self::B {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
   get a() → self::I3
     return null;
 }
 class C2 extends core::Object implements self::A, self::B {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
   get a() → dynamic
diff --git a/pkg/front_end/testcases/inference/constructors_downwards_with_constraint.dart.strong.expect b/pkg/front_end/testcases/inference/constructors_downwards_with_constraint.dart.strong.expect
index de1f229f21b..4aaebacda34 100644
--- a/pkg/front_end/testcases/inference/constructors_downwards_with_constraint.dart.strong.expect
+++ b/pkg/front_end/testcases/inference/constructors_downwards_with_constraint.dart.strong.expect
@@ -3,17 +3,17 @@ import self as self;
 import "dart:core" as core;
 
 class A extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
 }
 class B extends self::A {
-  constructor •() → void
+  default constructor •() → void
     : super self::A::•()
     ;
 }
 class Foo<T extends self::A> extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
 }
diff --git a/pkg/front_end/testcases/inference/constructors_infer_from_arguments_argument_not_assignable.dart.strong.expect b/pkg/front_end/testcases/inference/constructors_infer_from_arguments_argument_not_assignable.dart.strong.expect
index 2cbf5685440..48abfa4cff6 100644
--- a/pkg/front_end/testcases/inference/constructors_infer_from_arguments_argument_not_assignable.dart.strong.expect
+++ b/pkg/front_end/testcases/inference/constructors_infer_from_arguments_argument_not_assignable.dart.strong.expect
@@ -4,7 +4,7 @@ import "dart:core" as core;
 
 typedef F<T extends core::Object> = () → T;
 class A extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
 }
@@ -14,7 +14,7 @@ class C<T extends self::A> extends core::Object {
     ;
 }
 class NotA extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
 }
diff --git a/pkg/front_end/testcases/inference/constructors_inference_f_bounded.dart.strong.expect b/pkg/front_end/testcases/inference/constructors_inference_f_bounded.dart.strong.expect
index 43a0a7e9dcb..7d7c6e2ec70 100644
--- a/pkg/front_end/testcases/inference/constructors_inference_f_bounded.dart.strong.expect
+++ b/pkg/front_end/testcases/inference/constructors_inference_f_bounded.dart.strong.expect
@@ -3,7 +3,7 @@ import self as self;
 import "dart:core" as core;
 
 class Clonable<T extends core::Object> extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
 }
diff --git a/pkg/front_end/testcases/inference/do_not_infer_overridden_fields_that_explicitly_say_dynamic_infer.dart.strong.expect b/pkg/front_end/testcases/inference/do_not_infer_overridden_fields_that_explicitly_say_dynamic_infer.dart.strong.expect
index 7a445002920..2d81a481eb6 100644
--- a/pkg/front_end/testcases/inference/do_not_infer_overridden_fields_that_explicitly_say_dynamic_infer.dart.strong.expect
+++ b/pkg/front_end/testcases/inference/do_not_infer_overridden_fields_that_explicitly_say_dynamic_infer.dart.strong.expect
@@ -4,12 +4,12 @@ import "dart:core" as core;
 
 class A extends core::Object {
   final field core::int x = 2;
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
 }
 class B extends core::Object implements self::A {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
   get x() → dynamic
diff --git a/pkg/front_end/testcases/inference/dont_infer_field_type_when_initializer_is_null.dart.strong.expect b/pkg/front_end/testcases/inference/dont_infer_field_type_when_initializer_is_null.dart.strong.expect
index a30eeb4fc1a..db6aaf108a2 100644
--- a/pkg/front_end/testcases/inference/dont_infer_field_type_when_initializer_is_null.dart.strong.expect
+++ b/pkg/front_end/testcases/inference/dont_infer_field_type_when_initializer_is_null.dart.strong.expect
@@ -7,7 +7,7 @@ class A extends core::Object {
   static field core::int y = 3;
   field dynamic x2 = null;
   field core::int y2 = 3;
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
 }
diff --git a/pkg/front_end/testcases/inference/downwards_inference_annotations.dart.direct.expect b/pkg/front_end/testcases/inference/downwards_inference_annotations.dart.direct.expect
index 6588fb81212..c4d78fa46b3 100644
--- a/pkg/front_end/testcases/inference/downwards_inference_annotations.dart.direct.expect
+++ b/pkg/front_end/testcases/inference/downwards_inference_annotations.dart.direct.expect
@@ -12,13 +12,13 @@ class Foo extends core::Object {
 }
 @self::Foo::•(const <dynamic>[])
 class Bar extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
 }
 @self::Foo::named(const <dynamic>[])
 class Baz extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
 }
diff --git a/pkg/front_end/testcases/inference/downwards_inference_annotations.dart.outline.expect b/pkg/front_end/testcases/inference/downwards_inference_annotations.dart.outline.expect
index 20e529c9838..e2bb7327b7b 100644
--- a/pkg/front_end/testcases/inference/downwards_inference_annotations.dart.outline.expect
+++ b/pkg/front_end/testcases/inference/downwards_inference_annotations.dart.outline.expect
@@ -9,11 +9,11 @@ class Foo extends core::Object {
     ;
 }
 class Bar extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     ;
 }
 class Baz extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     ;
 }
 static method main() → dynamic
diff --git a/pkg/front_end/testcases/inference/downwards_inference_annotations.dart.strong.expect b/pkg/front_end/testcases/inference/downwards_inference_annotations.dart.strong.expect
index 540ec7b3f2e..23e1ae3b13f 100644
--- a/pkg/front_end/testcases/inference/downwards_inference_annotations.dart.strong.expect
+++ b/pkg/front_end/testcases/inference/downwards_inference_annotations.dart.strong.expect
@@ -12,13 +12,13 @@ class Foo extends core::Object {
 }
 @self::Foo::•(const <core::String>[])
 class Bar extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
 }
 @self::Foo::named(const <core::String>[])
 class Baz extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
 }
diff --git a/pkg/front_end/testcases/inference/downwards_inference_annotations_parameter.dart.direct.expect b/pkg/front_end/testcases/inference/downwards_inference_annotations_parameter.dart.direct.expect
index 522221e5ebe..b372a56fb0a 100644
--- a/pkg/front_end/testcases/inference/downwards_inference_annotations_parameter.dart.direct.expect
+++ b/pkg/front_end/testcases/inference/downwards_inference_annotations_parameter.dart.direct.expect
@@ -8,7 +8,7 @@ class Foo extends core::Object {
     ;
 }
 class C extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
   method m(dynamic x) → void {}
diff --git a/pkg/front_end/testcases/inference/downwards_inference_annotations_parameter.dart.outline.expect b/pkg/front_end/testcases/inference/downwards_inference_annotations_parameter.dart.outline.expect
index ba7e4b5c32f..71cfd728edc 100644
--- a/pkg/front_end/testcases/inference/downwards_inference_annotations_parameter.dart.outline.expect
+++ b/pkg/front_end/testcases/inference/downwards_inference_annotations_parameter.dart.outline.expect
@@ -7,7 +7,7 @@ class Foo extends core::Object {
     ;
 }
 class C extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     ;
   method m(dynamic x) → void
     ;
diff --git a/pkg/front_end/testcases/inference/downwards_inference_annotations_type_variable.dart.direct.expect b/pkg/front_end/testcases/inference/downwards_inference_annotations_type_variable.dart.direct.expect
index 0b9cecbc37b..41cf916c2d0 100644
--- a/pkg/front_end/testcases/inference/downwards_inference_annotations_type_variable.dart.direct.expect
+++ b/pkg/front_end/testcases/inference/downwards_inference_annotations_type_variable.dart.direct.expect
@@ -9,12 +9,12 @@ class Foo extends core::Object {
     ;
 }
 class C<T extends core::Object> extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
 }
 class D extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
   method m<T extends core::Object>() → void {}
diff --git a/pkg/front_end/testcases/inference/downwards_inference_annotations_type_variable.dart.outline.expect b/pkg/front_end/testcases/inference/downwards_inference_annotations_type_variable.dart.outline.expect
index 0295fe729a9..a66d0eeae2d 100644
--- a/pkg/front_end/testcases/inference/downwards_inference_annotations_type_variable.dart.outline.expect
+++ b/pkg/front_end/testcases/inference/downwards_inference_annotations_type_variable.dart.outline.expect
@@ -8,11 +8,11 @@ class Foo extends core::Object {
     ;
 }
 class C<T extends core::Object> extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     ;
 }
 class D extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     ;
   method m<T extends core::Object>() → void
     ;
diff --git a/pkg/front_end/testcases/inference/downwards_inference_inside_top_level.dart.strong.expect b/pkg/front_end/testcases/inference/downwards_inference_inside_top_level.dart.strong.expect
index 137e0315054..98e41710740 100644
--- a/pkg/front_end/testcases/inference/downwards_inference_inside_top_level.dart.strong.expect
+++ b/pkg/front_end/testcases/inference/downwards_inference_inside_top_level.dart.strong.expect
@@ -4,7 +4,7 @@ import "dart:core" as core;
 
 class A extends core::Object {
   field self::B<core::int> b = null;
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
 }
diff --git a/pkg/front_end/testcases/inference/downwards_inference_on_list_literals_infer_if_value_types_match_context.dart.strong.expect b/pkg/front_end/testcases/inference/downwards_inference_on_list_literals_infer_if_value_types_match_context.dart.strong.expect
index bcfdb834384..7db01ad904d 100644
--- a/pkg/front_end/testcases/inference/downwards_inference_on_list_literals_infer_if_value_types_match_context.dart.strong.expect
+++ b/pkg/front_end/testcases/inference/downwards_inference_on_list_literals_infer_if_value_types_match_context.dart.strong.expect
@@ -5,14 +5,14 @@ import "dart:core" as core;
 typedef Asserter<T extends core::Object> = (T) → void;
 typedef AsserterBuilder<S extends core::Object, T extends core::Object> = (S) → (T) → void;
 class DartType extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
 }
 abstract class C extends core::Object {
   static field (core::List<(self::DartType) → void>) → (self::DartType) → void assertBOf = null;
   field (core::List<(self::DartType) → void>) → (self::DartType) → void assertAOf = null;
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
   static get assertCOf() → (core::List<(self::DartType) → void>) → (self::DartType) → void
@@ -28,7 +28,7 @@ abstract class C extends core::Object {
 }
 abstract class G<T extends core::Object> extends core::Object {
   field (core::List<(self::DartType) → void>) → (self::DartType) → void assertAOf = null;
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
   abstract get assertDOf() → (core::List<(self::DartType) → void>) → (self::DartType) → void;
diff --git a/pkg/front_end/testcases/inference/field_refers_to_static_getter.dart.strong.expect b/pkg/front_end/testcases/inference/field_refers_to_static_getter.dart.strong.expect
index eedbc6fb582..34894c7037b 100644
--- a/pkg/front_end/testcases/inference/field_refers_to_static_getter.dart.strong.expect
+++ b/pkg/front_end/testcases/inference/field_refers_to_static_getter.dart.strong.expect
@@ -4,7 +4,7 @@ import "dart:core" as core;
 
 class C extends core::Object {
   final field core::int x = self::C::_x;
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
   static get _x() → core::int
diff --git a/pkg/front_end/testcases/inference/field_refers_to_top_level_getter.dart.strong.expect b/pkg/front_end/testcases/inference/field_refers_to_top_level_getter.dart.strong.expect
index 57654e07248..9e8f8f0c00a 100644
--- a/pkg/front_end/testcases/inference/field_refers_to_top_level_getter.dart.strong.expect
+++ b/pkg/front_end/testcases/inference/field_refers_to_top_level_getter.dart.strong.expect
@@ -4,7 +4,7 @@ import "dart:core" as core;
 
 class C extends core::Object {
   final field core::int x = self::y;
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
 }
diff --git a/pkg/front_end/testcases/inference/future_union_downwards_generic_method_with_future_return.dart.strong.expect b/pkg/front_end/testcases/inference/future_union_downwards_generic_method_with_future_return.dart.strong.expect
index 0043d40d798..182662a3d29 100644
--- a/pkg/front_end/testcases/inference/future_union_downwards_generic_method_with_future_return.dart.strong.expect
+++ b/pkg/front_end/testcases/inference/future_union_downwards_generic_method_with_future_return.dart.strong.expect
@@ -4,7 +4,7 @@ import "dart:core" as core;
 import "dart:async" as asy;
 
 class A extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
 }
diff --git a/pkg/front_end/testcases/inference/future_union_upwards_generic_methods.dart.strong.expect b/pkg/front_end/testcases/inference/future_union_upwards_generic_methods.dart.strong.expect
index 93749c9eb0a..4bf46e6f60a 100644
--- a/pkg/front_end/testcases/inference/future_union_upwards_generic_methods.dart.strong.expect
+++ b/pkg/front_end/testcases/inference/future_union_upwards_generic_methods.dart.strong.expect
@@ -4,17 +4,17 @@ import "dart:core" as core;
 import "dart:async" as asy;
 
 class A extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
 }
 class B extends self::A {
-  constructor •() → void
+  default constructor •() → void
     : super self::A::•()
     ;
 }
 class C extends self::A {
-  constructor •() → void
+  default constructor •() → void
     : super self::A::•()
     ;
 }
diff --git a/pkg/front_end/testcases/inference/generic_methods_correctly_recognize_generic_upper_bound.dart.strong.expect b/pkg/front_end/testcases/inference/generic_methods_correctly_recognize_generic_upper_bound.dart.strong.expect
index 39f19d7a9ba..1955272f151 100644
--- a/pkg/front_end/testcases/inference/generic_methods_correctly_recognize_generic_upper_bound.dart.strong.expect
+++ b/pkg/front_end/testcases/inference/generic_methods_correctly_recognize_generic_upper_bound.dart.strong.expect
@@ -3,7 +3,7 @@ import self as self;
 import "dart:core" as core;
 
 class Foo<T extends core::Pattern> extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
   method method<U extends self::Foo::T>(self::Foo::method::U u) → self::Foo::method::U
diff --git a/pkg/front_end/testcases/inference/generic_methods_do_not_infer_invalid_override_of_generic_method.dart.strong.expect b/pkg/front_end/testcases/inference/generic_methods_do_not_infer_invalid_override_of_generic_method.dart.strong.expect
index 990b8365264..c3e407b2781 100644
--- a/pkg/front_end/testcases/inference/generic_methods_do_not_infer_invalid_override_of_generic_method.dart.strong.expect
+++ b/pkg/front_end/testcases/inference/generic_methods_do_not_infer_invalid_override_of_generic_method.dart.strong.expect
@@ -3,14 +3,14 @@ import self as self;
 import "dart:core" as core;
 
 class C extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
   method m<T extends core::Object>(self::C::m::T x) → self::C::m::T
     return x;
 }
 class D extends self::C {
-  constructor •() → void
+  default constructor •() → void
     : super self::C::•()
     ;
   method m(dynamic x) → dynamic
diff --git a/pkg/front_end/testcases/inference/generic_methods_handle_override_of_non_generic_with_generic.dart.strong.expect b/pkg/front_end/testcases/inference/generic_methods_handle_override_of_non_generic_with_generic.dart.strong.expect
index a8e460e228f..80924223d8e 100644
--- a/pkg/front_end/testcases/inference/generic_methods_handle_override_of_non_generic_with_generic.dart.strong.expect
+++ b/pkg/front_end/testcases/inference/generic_methods_handle_override_of_non_generic_with_generic.dart.strong.expect
@@ -3,7 +3,7 @@ import self as self;
 import "dart:core" as core;
 
 class C extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
   method m(dynamic x) → dynamic
@@ -12,7 +12,7 @@ class C extends core::Object {
     return x;
 }
 class D extends self::C {
-  constructor •() → void
+  default constructor •() → void
     : super self::C::•()
     ;
   method m<T extends core::Object>(self::D::m::T x) → self::D::m::T
diff --git a/pkg/front_end/testcases/inference/generic_methods_infer_generic_function_parameter_type.dart.strong.expect b/pkg/front_end/testcases/inference/generic_methods_infer_generic_function_parameter_type.dart.strong.expect
index 8ded9517084..090cdf22791 100644
--- a/pkg/front_end/testcases/inference/generic_methods_infer_generic_function_parameter_type.dart.strong.expect
+++ b/pkg/front_end/testcases/inference/generic_methods_infer_generic_function_parameter_type.dart.strong.expect
@@ -4,13 +4,13 @@ import "dart:core" as core;
 
 typedef F<V extends core::Object> = (V) → void;
 class C<T extends core::Object> extends self::D<self::C::T> {
-  constructor •() → void
+  default constructor •() → void
     : super self::D::•()
     ;
   method f<U extends core::Object>(self::C::f::U x) → (self::C::f::U) → void {}
 }
 class D<T extends core::Object> extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
   method f<U extends core::Object>(self::D::f::U u) → (self::D::f::U) → void
diff --git a/pkg/front_end/testcases/inference/generic_methods_infer_generic_function_parameter_type2.dart.strong.expect b/pkg/front_end/testcases/inference/generic_methods_infer_generic_function_parameter_type2.dart.strong.expect
index 62ffb7d8e2a..fd88e8870ad 100644
--- a/pkg/front_end/testcases/inference/generic_methods_infer_generic_function_parameter_type2.dart.strong.expect
+++ b/pkg/front_end/testcases/inference/generic_methods_infer_generic_function_parameter_type2.dart.strong.expect
@@ -4,14 +4,14 @@ import "dart:core" as core;
 
 typedef G<V extends core::Object> = () → core::List<V>;
 class C<T extends core::Object> extends self::D<self::C::T> {
-  constructor •() → void
+  default constructor •() → void
     : super self::D::•()
     ;
   method f<U extends core::Object>(() → core::List<self::C::f::U> g) → void
     return null;
 }
 abstract class D<T extends core::Object> extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
   abstract method f<U extends core::Object>(() → core::List<self::D::f::U> g) → void;
diff --git a/pkg/front_end/testcases/inference/generic_methods_infer_generic_function_return_type.dart.strong.expect b/pkg/front_end/testcases/inference/generic_methods_infer_generic_function_return_type.dart.strong.expect
index 430135b19e5..b93f38db756 100644
--- a/pkg/front_end/testcases/inference/generic_methods_infer_generic_function_return_type.dart.strong.expect
+++ b/pkg/front_end/testcases/inference/generic_methods_infer_generic_function_return_type.dart.strong.expect
@@ -4,13 +4,13 @@ import "dart:core" as core;
 
 typedef F<V extends core::Object> = () → V;
 class C<T extends core::Object> extends self::D<self::C::T> {
-  constructor •() → void
+  default constructor •() → void
     : super self::D::•()
     ;
   method f<U extends core::Object>(self::C::f::U x) → () → self::C::f::U {}
 }
 class D<T extends core::Object> extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
   method f<U extends core::Object>(self::D::f::U u) → () → self::D::f::U
diff --git a/pkg/front_end/testcases/inference/generic_methods_infer_generic_instantiation.dart.strong.expect b/pkg/front_end/testcases/inference/generic_methods_infer_generic_instantiation.dart.strong.expect
index b66d99edd89..62d74a5205a 100644
--- a/pkg/front_end/testcases/inference/generic_methods_infer_generic_instantiation.dart.strong.expect
+++ b/pkg/front_end/testcases/inference/generic_methods_infer_generic_instantiation.dart.strong.expect
@@ -4,7 +4,7 @@ import "dart:core" as core;
 import "dart:math" as math;
 
 class C extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
   method m<T extends core::num>(self::C::m::T x, self::C::m::T y) → self::C::m::T
diff --git a/pkg/front_end/testcases/inference/generic_methods_infer_generic_method_type.dart.strong.expect b/pkg/front_end/testcases/inference/generic_methods_infer_generic_method_type.dart.strong.expect
index b36b584c5bf..8f59de62654 100644
--- a/pkg/front_end/testcases/inference/generic_methods_infer_generic_method_type.dart.strong.expect
+++ b/pkg/front_end/testcases/inference/generic_methods_infer_generic_method_type.dart.strong.expect
@@ -3,14 +3,14 @@ import self as self;
 import "dart:core" as core;
 
 class C extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
   method m<T extends core::Object>(self::C::m::T x) → self::C::m::T
     return x;
 }
 class D extends self::C {
-  constructor •() → void
+  default constructor •() → void
     : super self::C::•()
     ;
   method m<S extends core::Object>(self::D::m::S x) → self::D::m::S
diff --git a/pkg/front_end/testcases/inference/generic_methods_nested_generic_instantiation.dart.strong.expect b/pkg/front_end/testcases/inference/generic_methods_nested_generic_instantiation.dart.strong.expect
index 84de19f9c9c..ea3f01d3dd3 100644
--- a/pkg/front_end/testcases/inference/generic_methods_nested_generic_instantiation.dart.strong.expect
+++ b/pkg/front_end/testcases/inference/generic_methods_nested_generic_instantiation.dart.strong.expect
@@ -5,13 +5,13 @@ import "dart:math" as math;
 
 class Trace extends core::Object {
   field core::List<self::Frame> frames = <self::Frame>[];
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
 }
 class Frame extends core::Object {
   field core::String location = "";
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
 }
diff --git a/pkg/front_end/testcases/inference/greatest_closure_multiple_params.dart.direct.expect b/pkg/front_end/testcases/inference/greatest_closure_multiple_params.dart.direct.expect
index c2716da71c5..3075ff64562 100644
--- a/pkg/front_end/testcases/inference/greatest_closure_multiple_params.dart.direct.expect
+++ b/pkg/front_end/testcases/inference/greatest_closure_multiple_params.dart.direct.expect
@@ -3,7 +3,7 @@ import self as self;
 import "dart:core" as core;
 
 abstract class C<E extends core::Object> extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
   method sort([(self::C::E, self::C::E) → core::int compare = null]) → void {
diff --git a/pkg/front_end/testcases/inference/greatest_closure_multiple_params.dart.outline.expect b/pkg/front_end/testcases/inference/greatest_closure_multiple_params.dart.outline.expect
index b65cdb156bd..a67436eef71 100644
--- a/pkg/front_end/testcases/inference/greatest_closure_multiple_params.dart.outline.expect
+++ b/pkg/front_end/testcases/inference/greatest_closure_multiple_params.dart.outline.expect
@@ -3,7 +3,7 @@ import self as self;
 import "dart:core" as core;
 
 abstract class C<E extends core::Object> extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     ;
   method sort([(self::C::E, self::C::E) → core::int compare]) → void
     ;
diff --git a/pkg/front_end/testcases/inference/greatest_closure_multiple_params.dart.strong.expect b/pkg/front_end/testcases/inference/greatest_closure_multiple_params.dart.strong.expect
index 58c516aea59..cccbfff6ff1 100644
--- a/pkg/front_end/testcases/inference/greatest_closure_multiple_params.dart.strong.expect
+++ b/pkg/front_end/testcases/inference/greatest_closure_multiple_params.dart.strong.expect
@@ -3,7 +3,7 @@ import self as self;
 import "dart:core" as core;
 
 abstract class C<E extends core::Object> extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
   method sort([(self::C::E, self::C::E) → core::int compare = null]) → void {
diff --git a/pkg/front_end/testcases/inference/infer_accessor_from_later_inferred_field.dart.direct.expect b/pkg/front_end/testcases/inference/infer_accessor_from_later_inferred_field.dart.direct.expect
index a7caf13a9b3..294808003df 100644
--- a/pkg/front_end/testcases/inference/infer_accessor_from_later_inferred_field.dart.direct.expect
+++ b/pkg/front_end/testcases/inference/infer_accessor_from_later_inferred_field.dart.direct.expect
@@ -3,7 +3,7 @@ import self as self;
 import "dart:core" as core;
 
 class A extends core::Object implements self::B {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
   get x() → dynamic
@@ -12,7 +12,7 @@ class A extends core::Object implements self::B {
 }
 class B extends core::Object {
   field dynamic x = 0;
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
 }
diff --git a/pkg/front_end/testcases/inference/infer_accessor_from_later_inferred_field.dart.outline.expect b/pkg/front_end/testcases/inference/infer_accessor_from_later_inferred_field.dart.outline.expect
index b0e345adc0b..9f0786f6729 100644
--- a/pkg/front_end/testcases/inference/infer_accessor_from_later_inferred_field.dart.outline.expect
+++ b/pkg/front_end/testcases/inference/infer_accessor_from_later_inferred_field.dart.outline.expect
@@ -3,7 +3,7 @@ import self as self;
 import "dart:core" as core;
 
 class A extends core::Object implements self::B {
-  constructor •() → void
+  default constructor •() → void
     ;
   get x() → dynamic
     ;
@@ -12,7 +12,7 @@ class A extends core::Object implements self::B {
 }
 class B extends core::Object {
   field dynamic x;
-  constructor •() → void
+  default constructor •() → void
     ;
 }
 static method f() → dynamic
diff --git a/pkg/front_end/testcases/inference/infer_accessor_from_later_inferred_field.dart.strong.expect b/pkg/front_end/testcases/inference/infer_accessor_from_later_inferred_field.dart.strong.expect
index 7133d76e720..50be6c7067d 100644
--- a/pkg/front_end/testcases/inference/infer_accessor_from_later_inferred_field.dart.strong.expect
+++ b/pkg/front_end/testcases/inference/infer_accessor_from_later_inferred_field.dart.strong.expect
@@ -3,7 +3,7 @@ import self as self;
 import "dart:core" as core;
 
 class A extends core::Object implements self::B {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
   get x() → core::int
@@ -12,7 +12,7 @@ class A extends core::Object implements self::B {
 }
 class B extends core::Object {
   field core::int x = 0;
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
 }
diff --git a/pkg/front_end/testcases/inference/infer_assign_to_implicit_this.dart.direct.expect b/pkg/front_end/testcases/inference/infer_assign_to_implicit_this.dart.direct.expect
index c7d31d099df..42d6111d37c 100644
--- a/pkg/front_end/testcases/inference/infer_assign_to_implicit_this.dart.direct.expect
+++ b/pkg/front_end/testcases/inference/infer_assign_to_implicit_this.dart.direct.expect
@@ -3,12 +3,12 @@ import self as self;
 import "dart:core" as core;
 
 class A extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
 }
 class B extends self::A {
-  constructor •() → void
+  default constructor •() → void
     : super self::A::•()
     ;
   operator +(self::C v) → self::A
@@ -21,13 +21,13 @@ class B extends self::A {
     return null;
 }
 class C extends self::B {
-  constructor •() → void
+  default constructor •() → void
     : super self::B::•()
     ;
 }
 class Test extends core::Object {
   field self::B member = null;
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
   method test() → void {
diff --git a/pkg/front_end/testcases/inference/infer_assign_to_implicit_this.dart.outline.expect b/pkg/front_end/testcases/inference/infer_assign_to_implicit_this.dart.outline.expect
index f5c0943651f..f93f8392afc 100644
--- a/pkg/front_end/testcases/inference/infer_assign_to_implicit_this.dart.outline.expect
+++ b/pkg/front_end/testcases/inference/infer_assign_to_implicit_this.dart.outline.expect
@@ -3,11 +3,11 @@ import self as self;
 import "dart:core" as core;
 
 class A extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     ;
 }
 class B extends self::A {
-  constructor •() → void
+  default constructor •() → void
     ;
   operator +(self::C v) → self::A
     ;
@@ -19,12 +19,12 @@ class B extends self::A {
     ;
 }
 class C extends self::B {
-  constructor •() → void
+  default constructor •() → void
     ;
 }
 class Test extends core::Object {
   field self::B member;
-  constructor •() → void
+  default constructor •() → void
     ;
   method test() → void
     ;
diff --git a/pkg/front_end/testcases/inference/infer_assign_to_implicit_this.dart.strong.expect b/pkg/front_end/testcases/inference/infer_assign_to_implicit_this.dart.strong.expect
index a95b2827160..03375144eca 100644
--- a/pkg/front_end/testcases/inference/infer_assign_to_implicit_this.dart.strong.expect
+++ b/pkg/front_end/testcases/inference/infer_assign_to_implicit_this.dart.strong.expect
@@ -3,12 +3,12 @@ import self as self;
 import "dart:core" as core;
 
 class A extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
 }
 class B extends self::A {
-  constructor •() → void
+  default constructor •() → void
     : super self::A::•()
     ;
   operator +(self::C v) → self::A
@@ -21,13 +21,13 @@ class B extends self::A {
     return null;
 }
 class C extends self::B {
-  constructor •() → void
+  default constructor •() → void
     : super self::B::•()
     ;
 }
 class Test extends core::Object {
   field self::B member = null;
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
   method test() → void {
diff --git a/pkg/front_end/testcases/inference/infer_assign_to_implicit_this_upwards.dart.direct.expect b/pkg/front_end/testcases/inference/infer_assign_to_implicit_this_upwards.dart.direct.expect
index 38f62934351..06f8fdcefcd 100644
--- a/pkg/front_end/testcases/inference/infer_assign_to_implicit_this_upwards.dart.direct.expect
+++ b/pkg/front_end/testcases/inference/infer_assign_to_implicit_this_upwards.dart.direct.expect
@@ -4,7 +4,7 @@ import "dart:core" as core;
 
 class Test1 extends core::Object {
   field core::int t = null;
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
   method test() → void {
@@ -20,7 +20,7 @@ class Test1 extends core::Object {
 }
 class Test2 extends core::Object {
   field core::num t = null;
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
   method test() → void {
@@ -39,7 +39,7 @@ class Test2 extends core::Object {
 }
 class Test3 extends core::Object {
   field core::double t = null;
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
   method test3() → void {
diff --git a/pkg/front_end/testcases/inference/infer_assign_to_implicit_this_upwards.dart.outline.expect b/pkg/front_end/testcases/inference/infer_assign_to_implicit_this_upwards.dart.outline.expect
index 5dbcc9fc236..ba720781bec 100644
--- a/pkg/front_end/testcases/inference/infer_assign_to_implicit_this_upwards.dart.outline.expect
+++ b/pkg/front_end/testcases/inference/infer_assign_to_implicit_this_upwards.dart.outline.expect
@@ -4,21 +4,21 @@ import "dart:core" as core;
 
 class Test1 extends core::Object {
   field core::int t;
-  constructor •() → void
+  default constructor •() → void
     ;
   method test() → void
     ;
 }
 class Test2 extends core::Object {
   field core::num t;
-  constructor •() → void
+  default constructor •() → void
     ;
   method test() → void
     ;
 }
 class Test3 extends core::Object {
   field core::double t;
-  constructor •() → void
+  default constructor •() → void
     ;
   method test3() → void
     ;
diff --git a/pkg/front_end/testcases/inference/infer_assign_to_implicit_this_upwards.dart.strong.expect b/pkg/front_end/testcases/inference/infer_assign_to_implicit_this_upwards.dart.strong.expect
index ad6e13848b6..be07e647a9d 100644
--- a/pkg/front_end/testcases/inference/infer_assign_to_implicit_this_upwards.dart.strong.expect
+++ b/pkg/front_end/testcases/inference/infer_assign_to_implicit_this_upwards.dart.strong.expect
@@ -4,7 +4,7 @@ import "dart:core" as core;
 
 class Test1 extends core::Object {
   field core::int t = null;
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
   method test() → void {
@@ -20,7 +20,7 @@ class Test1 extends core::Object {
 }
 class Test2 extends core::Object {
   field core::num t = null;
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
   method test() → void {
@@ -39,7 +39,7 @@ class Test2 extends core::Object {
 }
 class Test3 extends core::Object {
   field core::double t = null;
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
   method test3() → void {
diff --git a/pkg/front_end/testcases/inference/infer_assign_to_index_full.dart.direct.expect b/pkg/front_end/testcases/inference/infer_assign_to_index_full.dart.direct.expect
index 8aea9af1399..fe603ea3cfb 100644
--- a/pkg/front_end/testcases/inference/infer_assign_to_index_full.dart.direct.expect
+++ b/pkg/front_end/testcases/inference/infer_assign_to_index_full.dart.direct.expect
@@ -3,17 +3,17 @@ import self as self;
 import "dart:core" as core;
 
 class Index extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
 }
 class A extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
 }
 class B extends self::A {
-  constructor •() → void
+  default constructor •() → void
     : super self::A::•()
     ;
   operator +(self::C v) → self::A
@@ -26,12 +26,12 @@ class B extends self::A {
     return null;
 }
 class C extends self::B {
-  constructor •() → void
+  default constructor •() → void
     : super self::B::•()
     ;
 }
 class Test extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
   operator [](self::Index i) → self::B
diff --git a/pkg/front_end/testcases/inference/infer_assign_to_index_full.dart.outline.expect b/pkg/front_end/testcases/inference/infer_assign_to_index_full.dart.outline.expect
index 4394e22ef63..3d9f3a4de47 100644
--- a/pkg/front_end/testcases/inference/infer_assign_to_index_full.dart.outline.expect
+++ b/pkg/front_end/testcases/inference/infer_assign_to_index_full.dart.outline.expect
@@ -3,15 +3,15 @@ import self as self;
 import "dart:core" as core;
 
 class Index extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     ;
 }
 class A extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     ;
 }
 class B extends self::A {
-  constructor •() → void
+  default constructor •() → void
     ;
   operator +(self::C v) → self::A
     ;
@@ -23,11 +23,11 @@ class B extends self::A {
     ;
 }
 class C extends self::B {
-  constructor •() → void
+  default constructor •() → void
     ;
 }
 class Test extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     ;
   operator [](self::Index i) → self::B
     ;
diff --git a/pkg/front_end/testcases/inference/infer_assign_to_index_full.dart.strong.expect b/pkg/front_end/testcases/inference/infer_assign_to_index_full.dart.strong.expect
index dc77bbfa9a1..2883434fdea 100644
--- a/pkg/front_end/testcases/inference/infer_assign_to_index_full.dart.strong.expect
+++ b/pkg/front_end/testcases/inference/infer_assign_to_index_full.dart.strong.expect
@@ -3,17 +3,17 @@ import self as self;
 import "dart:core" as core;
 
 class Index extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
 }
 class A extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
 }
 class B extends self::A {
-  constructor •() → void
+  default constructor •() → void
     : super self::A::•()
     ;
   operator +(self::C v) → self::A
@@ -26,12 +26,12 @@ class B extends self::A {
     return null;
 }
 class C extends self::B {
-  constructor •() → void
+  default constructor •() → void
     : super self::B::•()
     ;
 }
 class Test extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
   operator [](self::Index i) → self::B
diff --git a/pkg/front_end/testcases/inference/infer_assign_to_index_set_vs_get.dart.direct.expect b/pkg/front_end/testcases/inference/infer_assign_to_index_set_vs_get.dart.direct.expect
index bd36026f74c..17cf4285482 100644
--- a/pkg/front_end/testcases/inference/infer_assign_to_index_set_vs_get.dart.direct.expect
+++ b/pkg/front_end/testcases/inference/infer_assign_to_index_set_vs_get.dart.direct.expect
@@ -3,12 +3,12 @@ import self as self;
 import "dart:core" as core;
 
 class Index extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
 }
 class A extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
   operator +(self::F v) → self::C
@@ -17,7 +17,7 @@ class A extends core::Object {
     return null;
 }
 class B extends self::A {
-  constructor •() → void
+  default constructor •() → void
     : super self::A::•()
     ;
   operator +(self::E v) → self::D
@@ -26,27 +26,27 @@ class B extends self::A {
     return null;
 }
 class C extends self::B {
-  constructor •() → void
+  default constructor •() → void
     : super self::B::•()
     ;
 }
 class D extends self::C {
-  constructor •() → void
+  default constructor •() → void
     : super self::C::•()
     ;
 }
 class E extends self::D {
-  constructor •() → void
+  default constructor •() → void
     : super self::D::•()
     ;
 }
 class F extends self::E {
-  constructor •() → void
+  default constructor •() → void
     : super self::E::•()
     ;
 }
 class Test extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
   operator [](self::Index i) → self::B
diff --git a/pkg/front_end/testcases/inference/infer_assign_to_index_set_vs_get.dart.outline.expect b/pkg/front_end/testcases/inference/infer_assign_to_index_set_vs_get.dart.outline.expect
index 6c8e6de9139..62690b3e4fd 100644
--- a/pkg/front_end/testcases/inference/infer_assign_to_index_set_vs_get.dart.outline.expect
+++ b/pkg/front_end/testcases/inference/infer_assign_to_index_set_vs_get.dart.outline.expect
@@ -3,11 +3,11 @@ import self as self;
 import "dart:core" as core;
 
 class Index extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     ;
 }
 class A extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     ;
   operator +(self::F v) → self::C
     ;
@@ -15,7 +15,7 @@ class A extends core::Object {
     ;
 }
 class B extends self::A {
-  constructor •() → void
+  default constructor •() → void
     ;
   operator +(self::E v) → self::D
     ;
@@ -23,23 +23,23 @@ class B extends self::A {
     ;
 }
 class C extends self::B {
-  constructor •() → void
+  default constructor •() → void
     ;
 }
 class D extends self::C {
-  constructor •() → void
+  default constructor •() → void
     ;
 }
 class E extends self::D {
-  constructor •() → void
+  default constructor •() → void
     ;
 }
 class F extends self::E {
-  constructor •() → void
+  default constructor •() → void
     ;
 }
 class Test extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     ;
   operator [](self::Index i) → self::B
     ;
diff --git a/pkg/front_end/testcases/inference/infer_assign_to_index_set_vs_get.dart.strong.expect b/pkg/front_end/testcases/inference/infer_assign_to_index_set_vs_get.dart.strong.expect
index 0ce6b7723e2..0b1334b3443 100644
--- a/pkg/front_end/testcases/inference/infer_assign_to_index_set_vs_get.dart.strong.expect
+++ b/pkg/front_end/testcases/inference/infer_assign_to_index_set_vs_get.dart.strong.expect
@@ -3,12 +3,12 @@ import self as self;
 import "dart:core" as core;
 
 class Index extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
 }
 class A extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
   operator +(self::F v) → self::C
@@ -17,7 +17,7 @@ class A extends core::Object {
     return null;
 }
 class B extends self::A {
-  constructor •() → void
+  default constructor •() → void
     : super self::A::•()
     ;
   operator +(self::E v) → self::D
@@ -26,27 +26,27 @@ class B extends self::A {
     return null;
 }
 class C extends self::B {
-  constructor •() → void
+  default constructor •() → void
     : super self::B::•()
     ;
 }
 class D extends self::C {
-  constructor •() → void
+  default constructor •() → void
     : super self::C::•()
     ;
 }
 class E extends self::D {
-  constructor •() → void
+  default constructor •() → void
     : super self::D::•()
     ;
 }
 class F extends self::E {
-  constructor •() → void
+  default constructor •() → void
     : super self::E::•()
     ;
 }
 class Test extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
   operator [](self::Index i) → self::B
diff --git a/pkg/front_end/testcases/inference/infer_assign_to_index_super.dart.direct.expect b/pkg/front_end/testcases/inference/infer_assign_to_index_super.dart.direct.expect
index 2869eb8229e..47f7f12d4df 100644
--- a/pkg/front_end/testcases/inference/infer_assign_to_index_super.dart.direct.expect
+++ b/pkg/front_end/testcases/inference/infer_assign_to_index_super.dart.direct.expect
@@ -3,17 +3,17 @@ import self as self;
 import "dart:core" as core;
 
 class Index extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
 }
 class A extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
 }
 class B extends self::A {
-  constructor •() → void
+  default constructor •() → void
     : super self::A::•()
     ;
   operator +(self::C v) → self::A
@@ -26,12 +26,12 @@ class B extends self::A {
     return null;
 }
 class C extends self::B {
-  constructor •() → void
+  default constructor •() → void
     : super self::B::•()
     ;
 }
 class Base extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
   operator [](self::Index i) → self::B
@@ -39,7 +39,7 @@ class Base extends core::Object {
   operator []=(self::Index i, self::B v) → void {}
 }
 class Test extends self::Base {
-  constructor •() → void
+  default constructor •() → void
     : super self::Base::•()
     ;
   method test() → void {
diff --git a/pkg/front_end/testcases/inference/infer_assign_to_index_super.dart.outline.expect b/pkg/front_end/testcases/inference/infer_assign_to_index_super.dart.outline.expect
index 03ab058abed..1debd58aef4 100644
--- a/pkg/front_end/testcases/inference/infer_assign_to_index_super.dart.outline.expect
+++ b/pkg/front_end/testcases/inference/infer_assign_to_index_super.dart.outline.expect
@@ -3,15 +3,15 @@ import self as self;
 import "dart:core" as core;
 
 class Index extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     ;
 }
 class A extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     ;
 }
 class B extends self::A {
-  constructor •() → void
+  default constructor •() → void
     ;
   operator +(self::C v) → self::A
     ;
@@ -23,11 +23,11 @@ class B extends self::A {
     ;
 }
 class C extends self::B {
-  constructor •() → void
+  default constructor •() → void
     ;
 }
 class Base extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     ;
   operator [](self::Index i) → self::B
     ;
@@ -35,7 +35,7 @@ class Base extends core::Object {
     ;
 }
 class Test extends self::Base {
-  constructor •() → void
+  default constructor •() → void
     ;
   method test() → void
     ;
diff --git a/pkg/front_end/testcases/inference/infer_assign_to_index_super.dart.strong.expect b/pkg/front_end/testcases/inference/infer_assign_to_index_super.dart.strong.expect
index 382cff77803..bd510eb9f5f 100644
--- a/pkg/front_end/testcases/inference/infer_assign_to_index_super.dart.strong.expect
+++ b/pkg/front_end/testcases/inference/infer_assign_to_index_super.dart.strong.expect
@@ -3,17 +3,17 @@ import self as self;
 import "dart:core" as core;
 
 class Index extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
 }
 class A extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
 }
 class B extends self::A {
-  constructor •() → void
+  default constructor •() → void
     : super self::A::•()
     ;
   operator +(self::C v) → self::A
@@ -26,12 +26,12 @@ class B extends self::A {
     return null;
 }
 class C extends self::B {
-  constructor •() → void
+  default constructor •() → void
     : super self::B::•()
     ;
 }
 class Base extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
   operator [](self::Index i) → self::B
@@ -39,7 +39,7 @@ class Base extends core::Object {
   operator []=(self::Index i, self::B v) → void {}
 }
 class Test extends self::Base {
-  constructor •() → void
+  default constructor •() → void
     : super self::Base::•()
     ;
   method test() → void {
diff --git a/pkg/front_end/testcases/inference/infer_assign_to_index_super_upwards.dart.direct.expect b/pkg/front_end/testcases/inference/infer_assign_to_index_super_upwards.dart.direct.expect
index 81d3a442db9..135b2ea1f6b 100644
--- a/pkg/front_end/testcases/inference/infer_assign_to_index_super_upwards.dart.direct.expect
+++ b/pkg/front_end/testcases/inference/infer_assign_to_index_super_upwards.dart.direct.expect
@@ -3,7 +3,7 @@ import self as self;
 import "dart:core" as core;
 
 abstract class Base<T extends core::Object, U extends core::Object> extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
   operator [](core::String s) → self::Base::T
@@ -14,7 +14,7 @@ abstract class Base<T extends core::Object, U extends core::Object> extends core
   abstract method setValue(core::String s, self::Base::U v) → void;
 }
 abstract class Test1 extends self::Base<core::int, core::int> {
-  constructor •() → void
+  default constructor •() → void
     : super self::Base::•()
     ;
   method test() → void {
@@ -29,7 +29,7 @@ abstract class Test1 extends self::Base<core::int, core::int> {
   }
 }
 abstract class Test2 extends self::Base<core::int, core::num> {
-  constructor •() → void
+  default constructor •() → void
     : super self::Base::•()
     ;
   method test() → void {
@@ -47,7 +47,7 @@ abstract class Test2 extends self::Base<core::int, core::num> {
   }
 }
 abstract class Test3 extends self::Base<core::int, core::double> {
-  constructor •() → void
+  default constructor •() → void
     : super self::Base::•()
     ;
   method test() → void {
@@ -63,7 +63,7 @@ abstract class Test3 extends self::Base<core::int, core::double> {
   }
 }
 abstract class Test4 extends self::Base<core::num, core::int> {
-  constructor •() → void
+  default constructor •() → void
     : super self::Base::•()
     ;
   method test() → void {
@@ -78,7 +78,7 @@ abstract class Test4 extends self::Base<core::num, core::int> {
   }
 }
 abstract class Test5 extends self::Base<core::num, core::num> {
-  constructor •() → void
+  default constructor •() → void
     : super self::Base::•()
     ;
   method test() → void {
@@ -96,7 +96,7 @@ abstract class Test5 extends self::Base<core::num, core::num> {
   }
 }
 abstract class Test6 extends self::Base<core::num, core::double> {
-  constructor •() → void
+  default constructor •() → void
     : super self::Base::•()
     ;
   method test() → void {
@@ -112,7 +112,7 @@ abstract class Test6 extends self::Base<core::num, core::double> {
   }
 }
 abstract class Test7 extends self::Base<core::double, core::int> {
-  constructor •() → void
+  default constructor •() → void
     : super self::Base::•()
     ;
   method test() → void {
@@ -127,7 +127,7 @@ abstract class Test7 extends self::Base<core::double, core::int> {
   }
 }
 abstract class Test8 extends self::Base<core::double, core::num> {
-  constructor •() → void
+  default constructor •() → void
     : super self::Base::•()
     ;
   method test() → void {
@@ -145,7 +145,7 @@ abstract class Test8 extends self::Base<core::double, core::num> {
   }
 }
 abstract class Test9 extends self::Base<core::double, core::double> {
-  constructor •() → void
+  default constructor •() → void
     : super self::Base::•()
     ;
   method test() → void {
diff --git a/pkg/front_end/testcases/inference/infer_assign_to_index_super_upwards.dart.outline.expect b/pkg/front_end/testcases/inference/infer_assign_to_index_super_upwards.dart.outline.expect
index 15c3a88c55d..a99413b27b9 100644
--- a/pkg/front_end/testcases/inference/infer_assign_to_index_super_upwards.dart.outline.expect
+++ b/pkg/front_end/testcases/inference/infer_assign_to_index_super_upwards.dart.outline.expect
@@ -3,7 +3,7 @@ import self as self;
 import "dart:core" as core;
 
 abstract class Base<T extends core::Object, U extends core::Object> extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     ;
   operator [](core::String s) → self::Base::T
     ;
@@ -13,55 +13,55 @@ abstract class Base<T extends core::Object, U extends core::Object> extends core
   abstract method setValue(core::String s, self::Base::U v) → void;
 }
 abstract class Test1 extends self::Base<core::int, core::int> {
-  constructor •() → void
+  default constructor •() → void
     ;
   method test() → void
     ;
 }
 abstract class Test2 extends self::Base<core::int, core::num> {
-  constructor •() → void
+  default constructor •() → void
     ;
   method test() → void
     ;
 }
 abstract class Test3 extends self::Base<core::int, core::double> {
-  constructor •() → void
+  default constructor •() → void
     ;
   method test() → void
     ;
 }
 abstract class Test4 extends self::Base<core::num, core::int> {
-  constructor •() → void
+  default constructor •() → void
     ;
   method test() → void
     ;
 }
 abstract class Test5 extends self::Base<core::num, core::num> {
-  constructor •() → void
+  default constructor •() → void
     ;
   method test() → void
     ;
 }
 abstract class Test6 extends self::Base<core::num, core::double> {
-  constructor •() → void
+  default constructor •() → void
     ;
   method test() → void
     ;
 }
 abstract class Test7 extends self::Base<core::double, core::int> {
-  constructor •() → void
+  default constructor •() → void
     ;
   method test() → void
     ;
 }
 abstract class Test8 extends self::Base<core::double, core::num> {
-  constructor •() → void
+  default constructor •() → void
     ;
   method test() → void
     ;
 }
 abstract class Test9 extends self::Base<core::double, core::double> {
-  constructor •() → void
+  default constructor •() → void
     ;
   method test() → void
     ;
diff --git a/pkg/front_end/testcases/inference/infer_assign_to_index_super_upwards.dart.strong.expect b/pkg/front_end/testcases/inference/infer_assign_to_index_super_upwards.dart.strong.expect
index d6c2a82d0c3..24e6d76d929 100644
--- a/pkg/front_end/testcases/inference/infer_assign_to_index_super_upwards.dart.strong.expect
+++ b/pkg/front_end/testcases/inference/infer_assign_to_index_super_upwards.dart.strong.expect
@@ -3,7 +3,7 @@ import self as self;
 import "dart:core" as core;
 
 abstract class Base<T extends core::Object, U extends core::Object> extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
   operator [](core::String s) → self::Base::T
@@ -14,7 +14,7 @@ abstract class Base<T extends core::Object, U extends core::Object> extends core
   abstract method setValue(core::String s, self::Base::U v) → void;
 }
 abstract class Test1 extends self::Base<core::int, core::int> {
-  constructor •() → void
+  default constructor •() → void
     : super self::Base::•()
     ;
   method test() → void {
@@ -29,7 +29,7 @@ abstract class Test1 extends self::Base<core::int, core::int> {
   }
 }
 abstract class Test2 extends self::Base<core::int, core::num> {
-  constructor •() → void
+  default constructor •() → void
     : super self::Base::•()
     ;
   method test() → void {
@@ -47,7 +47,7 @@ abstract class Test2 extends self::Base<core::int, core::num> {
   }
 }
 abstract class Test3 extends self::Base<core::int, core::double> {
-  constructor •() → void
+  default constructor •() → void
     : super self::Base::•()
     ;
   method test() → void {
@@ -63,7 +63,7 @@ abstract class Test3 extends self::Base<core::int, core::double> {
   }
 }
 abstract class Test4 extends self::Base<core::num, core::int> {
-  constructor •() → void
+  default constructor •() → void
     : super self::Base::•()
     ;
   method test() → void {
@@ -78,7 +78,7 @@ abstract class Test4 extends self::Base<core::num, core::int> {
   }
 }
 abstract class Test5 extends self::Base<core::num, core::num> {
-  constructor •() → void
+  default constructor •() → void
     : super self::Base::•()
     ;
   method test() → void {
@@ -96,7 +96,7 @@ abstract class Test5 extends self::Base<core::num, core::num> {
   }
 }
 abstract class Test6 extends self::Base<core::num, core::double> {
-  constructor •() → void
+  default constructor •() → void
     : super self::Base::•()
     ;
   method test() → void {
@@ -112,7 +112,7 @@ abstract class Test6 extends self::Base<core::num, core::double> {
   }
 }
 abstract class Test7 extends self::Base<core::double, core::int> {
-  constructor •() → void
+  default constructor •() → void
     : super self::Base::•()
     ;
   method test() → void {
@@ -127,7 +127,7 @@ abstract class Test7 extends self::Base<core::double, core::int> {
   }
 }
 abstract class Test8 extends self::Base<core::double, core::num> {
-  constructor •() → void
+  default constructor •() → void
     : super self::Base::•()
     ;
   method test() → void {
@@ -145,7 +145,7 @@ abstract class Test8 extends self::Base<core::double, core::num> {
   }
 }
 abstract class Test9 extends self::Base<core::double, core::double> {
-  constructor •() → void
+  default constructor •() → void
     : super self::Base::•()
     ;
   method test() → void {
diff --git a/pkg/front_end/testcases/inference/infer_assign_to_index_this.dart.direct.expect b/pkg/front_end/testcases/inference/infer_assign_to_index_this.dart.direct.expect
index 054a85593f7..9edcdb932d6 100644
--- a/pkg/front_end/testcases/inference/infer_assign_to_index_this.dart.direct.expect
+++ b/pkg/front_end/testcases/inference/infer_assign_to_index_this.dart.direct.expect
@@ -3,17 +3,17 @@ import self as self;
 import "dart:core" as core;
 
 class Index extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
 }
 class A extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
 }
 class B extends self::A {
-  constructor •() → void
+  default constructor •() → void
     : super self::A::•()
     ;
   operator +(self::C v) → self::A
@@ -26,12 +26,12 @@ class B extends self::A {
     return null;
 }
 class C extends self::B {
-  constructor •() → void
+  default constructor •() → void
     : super self::B::•()
     ;
 }
 class Test extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
   operator [](self::Index i) → self::B
diff --git a/pkg/front_end/testcases/inference/infer_assign_to_index_this.dart.outline.expect b/pkg/front_end/testcases/inference/infer_assign_to_index_this.dart.outline.expect
index 4394e22ef63..3d9f3a4de47 100644
--- a/pkg/front_end/testcases/inference/infer_assign_to_index_this.dart.outline.expect
+++ b/pkg/front_end/testcases/inference/infer_assign_to_index_this.dart.outline.expect
@@ -3,15 +3,15 @@ import self as self;
 import "dart:core" as core;
 
 class Index extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     ;
 }
 class A extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     ;
 }
 class B extends self::A {
-  constructor •() → void
+  default constructor •() → void
     ;
   operator +(self::C v) → self::A
     ;
@@ -23,11 +23,11 @@ class B extends self::A {
     ;
 }
 class C extends self::B {
-  constructor •() → void
+  default constructor •() → void
     ;
 }
 class Test extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     ;
   operator [](self::Index i) → self::B
     ;
diff --git a/pkg/front_end/testcases/inference/infer_assign_to_index_this.dart.strong.expect b/pkg/front_end/testcases/inference/infer_assign_to_index_this.dart.strong.expect
index b85ee838bcf..202125b3ee5 100644
--- a/pkg/front_end/testcases/inference/infer_assign_to_index_this.dart.strong.expect
+++ b/pkg/front_end/testcases/inference/infer_assign_to_index_this.dart.strong.expect
@@ -3,17 +3,17 @@ import self as self;
 import "dart:core" as core;
 
 class Index extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
 }
 class A extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
 }
 class B extends self::A {
-  constructor •() → void
+  default constructor •() → void
     : super self::A::•()
     ;
   operator +(self::C v) → self::A
@@ -26,12 +26,12 @@ class B extends self::A {
     return null;
 }
 class C extends self::B {
-  constructor •() → void
+  default constructor •() → void
     : super self::B::•()
     ;
 }
 class Test extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
   operator [](self::Index i) → self::B
diff --git a/pkg/front_end/testcases/inference/infer_assign_to_index_this_upwards.dart.direct.expect b/pkg/front_end/testcases/inference/infer_assign_to_index_this_upwards.dart.direct.expect
index 51841ee2dbf..379449832da 100644
--- a/pkg/front_end/testcases/inference/infer_assign_to_index_this_upwards.dart.direct.expect
+++ b/pkg/front_end/testcases/inference/infer_assign_to_index_this_upwards.dart.direct.expect
@@ -3,7 +3,7 @@ import self as self;
 import "dart:core" as core;
 
 abstract class Test1 extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
   abstract operator [](core::String s) → core::int;
@@ -20,7 +20,7 @@ abstract class Test1 extends core::Object {
   }
 }
 abstract class Test2 extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
   abstract operator [](core::String s) → core::int;
@@ -40,7 +40,7 @@ abstract class Test2 extends core::Object {
   }
 }
 abstract class Test3 extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
   abstract operator [](core::String s) → core::int;
@@ -58,7 +58,7 @@ abstract class Test3 extends core::Object {
   }
 }
 abstract class Test4 extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
   abstract operator [](core::String s) → core::num;
@@ -75,7 +75,7 @@ abstract class Test4 extends core::Object {
   }
 }
 abstract class Test5 extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
   abstract operator [](core::String s) → core::num;
@@ -95,7 +95,7 @@ abstract class Test5 extends core::Object {
   }
 }
 abstract class Test6 extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
   abstract operator [](core::String s) → core::num;
@@ -113,7 +113,7 @@ abstract class Test6 extends core::Object {
   }
 }
 abstract class Test7 extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
   abstract operator [](core::String s) → core::double;
@@ -130,7 +130,7 @@ abstract class Test7 extends core::Object {
   }
 }
 abstract class Test8 extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
   abstract operator [](core::String s) → core::double;
@@ -150,7 +150,7 @@ abstract class Test8 extends core::Object {
   }
 }
 abstract class Test9 extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
   abstract operator [](core::String s) → core::double;
diff --git a/pkg/front_end/testcases/inference/infer_assign_to_index_this_upwards.dart.outline.expect b/pkg/front_end/testcases/inference/infer_assign_to_index_this_upwards.dart.outline.expect
index 8fae59d333a..91159e53268 100644
--- a/pkg/front_end/testcases/inference/infer_assign_to_index_this_upwards.dart.outline.expect
+++ b/pkg/front_end/testcases/inference/infer_assign_to_index_this_upwards.dart.outline.expect
@@ -3,7 +3,7 @@ import self as self;
 import "dart:core" as core;
 
 abstract class Test1 extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     ;
   abstract operator [](core::String s) → core::int;
   abstract operator []=(core::String s, core::int v) → void;
@@ -11,7 +11,7 @@ abstract class Test1 extends core::Object {
     ;
 }
 abstract class Test2 extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     ;
   abstract operator [](core::String s) → core::int;
   abstract operator []=(core::String s, core::num v) → void;
@@ -19,7 +19,7 @@ abstract class Test2 extends core::Object {
     ;
 }
 abstract class Test3 extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     ;
   abstract operator [](core::String s) → core::int;
   abstract operator []=(core::String s, core::double v) → void;
@@ -27,7 +27,7 @@ abstract class Test3 extends core::Object {
     ;
 }
 abstract class Test4 extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     ;
   abstract operator [](core::String s) → core::num;
   abstract operator []=(core::String s, core::int v) → void;
@@ -35,7 +35,7 @@ abstract class Test4 extends core::Object {
     ;
 }
 abstract class Test5 extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     ;
   abstract operator [](core::String s) → core::num;
   abstract operator []=(core::String s, core::num v) → void;
@@ -43,7 +43,7 @@ abstract class Test5 extends core::Object {
     ;
 }
 abstract class Test6 extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     ;
   abstract operator [](core::String s) → core::num;
   abstract operator []=(core::String s, core::double v) → void;
@@ -51,7 +51,7 @@ abstract class Test6 extends core::Object {
     ;
 }
 abstract class Test7 extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     ;
   abstract operator [](core::String s) → core::double;
   abstract operator []=(core::String s, core::int v) → void;
@@ -59,7 +59,7 @@ abstract class Test7 extends core::Object {
     ;
 }
 abstract class Test8 extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     ;
   abstract operator [](core::String s) → core::double;
   abstract operator []=(core::String s, core::num v) → void;
@@ -67,7 +67,7 @@ abstract class Test8 extends core::Object {
     ;
 }
 abstract class Test9 extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     ;
   abstract operator [](core::String s) → core::double;
   abstract operator []=(core::String s, core::double v) → void;
diff --git a/pkg/front_end/testcases/inference/infer_assign_to_index_this_upwards.dart.strong.expect b/pkg/front_end/testcases/inference/infer_assign_to_index_this_upwards.dart.strong.expect
index edbb4445e67..67870c7a984 100644
--- a/pkg/front_end/testcases/inference/infer_assign_to_index_this_upwards.dart.strong.expect
+++ b/pkg/front_end/testcases/inference/infer_assign_to_index_this_upwards.dart.strong.expect
@@ -3,7 +3,7 @@ import self as self;
 import "dart:core" as core;
 
 abstract class Test1 extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
   abstract operator [](core::String s) → core::int;
@@ -20,7 +20,7 @@ abstract class Test1 extends core::Object {
   }
 }
 abstract class Test2 extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
   abstract operator [](core::String s) → core::int;
@@ -40,7 +40,7 @@ abstract class Test2 extends core::Object {
   }
 }
 abstract class Test3 extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
   abstract operator [](core::String s) → core::int;
@@ -58,7 +58,7 @@ abstract class Test3 extends core::Object {
   }
 }
 abstract class Test4 extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
   abstract operator [](core::String s) → core::num;
@@ -75,7 +75,7 @@ abstract class Test4 extends core::Object {
   }
 }
 abstract class Test5 extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
   abstract operator [](core::String s) → core::num;
@@ -95,7 +95,7 @@ abstract class Test5 extends core::Object {
   }
 }
 abstract class Test6 extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
   abstract operator [](core::String s) → core::num;
@@ -113,7 +113,7 @@ abstract class Test6 extends core::Object {
   }
 }
 abstract class Test7 extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
   abstract operator [](core::String s) → core::double;
@@ -130,7 +130,7 @@ abstract class Test7 extends core::Object {
   }
 }
 abstract class Test8 extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
   abstract operator [](core::String s) → core::double;
@@ -150,7 +150,7 @@ abstract class Test8 extends core::Object {
   }
 }
 abstract class Test9 extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
   abstract operator [](core::String s) → core::double;
diff --git a/pkg/front_end/testcases/inference/infer_assign_to_index_upwards.dart.direct.expect b/pkg/front_end/testcases/inference/infer_assign_to_index_upwards.dart.direct.expect
index 5739cc27c3e..5124a374d82 100644
--- a/pkg/front_end/testcases/inference/infer_assign_to_index_upwards.dart.direct.expect
+++ b/pkg/front_end/testcases/inference/infer_assign_to_index_upwards.dart.direct.expect
@@ -3,7 +3,7 @@ import self as self;
 import "dart:core" as core;
 
 abstract class Test<T extends core::Object, U extends core::Object> extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
   abstract operator [](core::String s) → self::Test::T;
diff --git a/pkg/front_end/testcases/inference/infer_assign_to_index_upwards.dart.outline.expect b/pkg/front_end/testcases/inference/infer_assign_to_index_upwards.dart.outline.expect
index 94f72e2719e..1a49f43652a 100644
--- a/pkg/front_end/testcases/inference/infer_assign_to_index_upwards.dart.outline.expect
+++ b/pkg/front_end/testcases/inference/infer_assign_to_index_upwards.dart.outline.expect
@@ -3,7 +3,7 @@ import self as self;
 import "dart:core" as core;
 
 abstract class Test<T extends core::Object, U extends core::Object> extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     ;
   abstract operator [](core::String s) → self::Test::T;
   abstract operator []=(core::String s, self::Test::U v) → void;
diff --git a/pkg/front_end/testcases/inference/infer_assign_to_index_upwards.dart.strong.expect b/pkg/front_end/testcases/inference/infer_assign_to_index_upwards.dart.strong.expect
index 0e011cdb3d2..ab04a29adc7 100644
--- a/pkg/front_end/testcases/inference/infer_assign_to_index_upwards.dart.strong.expect
+++ b/pkg/front_end/testcases/inference/infer_assign_to_index_upwards.dart.strong.expect
@@ -3,7 +3,7 @@ import self as self;
 import "dart:core" as core;
 
 abstract class Test<T extends core::Object, U extends core::Object> extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
   abstract operator [](core::String s) → self::Test::T;
diff --git a/pkg/front_end/testcases/inference/infer_assign_to_local.dart.direct.expect b/pkg/front_end/testcases/inference/infer_assign_to_local.dart.direct.expect
index df109d396bf..217cbec6c86 100644
--- a/pkg/front_end/testcases/inference/infer_assign_to_local.dart.direct.expect
+++ b/pkg/front_end/testcases/inference/infer_assign_to_local.dart.direct.expect
@@ -3,12 +3,12 @@ import self as self;
 import "dart:core" as core;
 
 class A extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
 }
 class B extends self::A {
-  constructor •() → void
+  default constructor •() → void
     : super self::A::•()
     ;
   operator +(self::C v) → self::A
@@ -21,7 +21,7 @@ class B extends self::A {
     return null;
 }
 class C extends self::B {
-  constructor •() → void
+  default constructor •() → void
     : super self::B::•()
     ;
 }
diff --git a/pkg/front_end/testcases/inference/infer_assign_to_local.dart.outline.expect b/pkg/front_end/testcases/inference/infer_assign_to_local.dart.outline.expect
index c9a4a6b5365..daeee4612ae 100644
--- a/pkg/front_end/testcases/inference/infer_assign_to_local.dart.outline.expect
+++ b/pkg/front_end/testcases/inference/infer_assign_to_local.dart.outline.expect
@@ -3,11 +3,11 @@ import self as self;
 import "dart:core" as core;
 
 class A extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     ;
 }
 class B extends self::A {
-  constructor •() → void
+  default constructor •() → void
     ;
   operator +(self::C v) → self::A
     ;
@@ -19,7 +19,7 @@ class B extends self::A {
     ;
 }
 class C extends self::B {
-  constructor •() → void
+  default constructor •() → void
     ;
 }
 static method f<T extends core::Object>() → self::f::T
diff --git a/pkg/front_end/testcases/inference/infer_assign_to_local.dart.strong.expect b/pkg/front_end/testcases/inference/infer_assign_to_local.dart.strong.expect
index afcb65946df..6d9f2aa0216 100644
--- a/pkg/front_end/testcases/inference/infer_assign_to_local.dart.strong.expect
+++ b/pkg/front_end/testcases/inference/infer_assign_to_local.dart.strong.expect
@@ -3,12 +3,12 @@ import self as self;
 import "dart:core" as core;
 
 class A extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
 }
 class B extends self::A {
-  constructor •() → void
+  default constructor •() → void
     : super self::A::•()
     ;
   operator +(self::C v) → self::A
@@ -21,7 +21,7 @@ class B extends self::A {
     return null;
 }
 class C extends self::B {
-  constructor •() → void
+  default constructor •() → void
     : super self::B::•()
     ;
 }
diff --git a/pkg/front_end/testcases/inference/infer_assign_to_property_full.dart.direct.expect b/pkg/front_end/testcases/inference/infer_assign_to_property_full.dart.direct.expect
index 0eb505ca476..f0c7aa217c7 100644
--- a/pkg/front_end/testcases/inference/infer_assign_to_property_full.dart.direct.expect
+++ b/pkg/front_end/testcases/inference/infer_assign_to_property_full.dart.direct.expect
@@ -3,12 +3,12 @@ import self as self;
 import "dart:core" as core;
 
 class A extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
 }
 class B extends self::A {
-  constructor •() → void
+  default constructor •() → void
     : super self::A::•()
     ;
   operator +(self::C v) → self::A
@@ -21,13 +21,13 @@ class B extends self::A {
     return null;
 }
 class C extends self::B {
-  constructor •() → void
+  default constructor •() → void
     : super self::B::•()
     ;
 }
 class Test extends core::Object {
   field self::B member = null;
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
   static method test(self::Test t) → void {
diff --git a/pkg/front_end/testcases/inference/infer_assign_to_property_full.dart.outline.expect b/pkg/front_end/testcases/inference/infer_assign_to_property_full.dart.outline.expect
index c5f9d664380..c5c340259a5 100644
--- a/pkg/front_end/testcases/inference/infer_assign_to_property_full.dart.outline.expect
+++ b/pkg/front_end/testcases/inference/infer_assign_to_property_full.dart.outline.expect
@@ -3,11 +3,11 @@ import self as self;
 import "dart:core" as core;
 
 class A extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     ;
 }
 class B extends self::A {
-  constructor •() → void
+  default constructor •() → void
     ;
   operator +(self::C v) → self::A
     ;
@@ -19,12 +19,12 @@ class B extends self::A {
     ;
 }
 class C extends self::B {
-  constructor •() → void
+  default constructor •() → void
     ;
 }
 class Test extends core::Object {
   field self::B member;
-  constructor •() → void
+  default constructor •() → void
     ;
   static method test(self::Test t) → void
     ;
diff --git a/pkg/front_end/testcases/inference/infer_assign_to_property_full.dart.strong.expect b/pkg/front_end/testcases/inference/infer_assign_to_property_full.dart.strong.expect
index 761ebf492cb..ae5bde93ada 100644
--- a/pkg/front_end/testcases/inference/infer_assign_to_property_full.dart.strong.expect
+++ b/pkg/front_end/testcases/inference/infer_assign_to_property_full.dart.strong.expect
@@ -3,12 +3,12 @@ import self as self;
 import "dart:core" as core;
 
 class A extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
 }
 class B extends self::A {
-  constructor •() → void
+  default constructor •() → void
     : super self::A::•()
     ;
   operator +(self::C v) → self::A
@@ -21,13 +21,13 @@ class B extends self::A {
     return null;
 }
 class C extends self::B {
-  constructor •() → void
+  default constructor •() → void
     : super self::B::•()
     ;
 }
 class Test extends core::Object {
   field self::B member = null;
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
   static method test(self::Test t) → void {
diff --git a/pkg/front_end/testcases/inference/infer_assign_to_property_null_aware.dart.direct.expect b/pkg/front_end/testcases/inference/infer_assign_to_property_null_aware.dart.direct.expect
index 0a402d16fd2..48480283184 100644
--- a/pkg/front_end/testcases/inference/infer_assign_to_property_null_aware.dart.direct.expect
+++ b/pkg/front_end/testcases/inference/infer_assign_to_property_null_aware.dart.direct.expect
@@ -3,12 +3,12 @@ import self as self;
 import "dart:core" as core;
 
 class A extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
 }
 class B extends self::A {
-  constructor •() → void
+  default constructor •() → void
     : super self::A::•()
     ;
   operator +(self::C v) → self::A
@@ -21,13 +21,13 @@ class B extends self::A {
     return null;
 }
 class C extends self::B {
-  constructor •() → void
+  default constructor •() → void
     : super self::B::•()
     ;
 }
 class Test extends core::Object {
   field self::B member = null;
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
   static method test(self::Test t) → void {
diff --git a/pkg/front_end/testcases/inference/infer_assign_to_property_null_aware.dart.outline.expect b/pkg/front_end/testcases/inference/infer_assign_to_property_null_aware.dart.outline.expect
index c5f9d664380..c5c340259a5 100644
--- a/pkg/front_end/testcases/inference/infer_assign_to_property_null_aware.dart.outline.expect
+++ b/pkg/front_end/testcases/inference/infer_assign_to_property_null_aware.dart.outline.expect
@@ -3,11 +3,11 @@ import self as self;
 import "dart:core" as core;
 
 class A extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     ;
 }
 class B extends self::A {
-  constructor •() → void
+  default constructor •() → void
     ;
   operator +(self::C v) → self::A
     ;
@@ -19,12 +19,12 @@ class B extends self::A {
     ;
 }
 class C extends self::B {
-  constructor •() → void
+  default constructor •() → void
     ;
 }
 class Test extends core::Object {
   field self::B member;
-  constructor •() → void
+  default constructor •() → void
     ;
   static method test(self::Test t) → void
     ;
diff --git a/pkg/front_end/testcases/inference/infer_assign_to_property_null_aware.dart.strong.expect b/pkg/front_end/testcases/inference/infer_assign_to_property_null_aware.dart.strong.expect
index 53dea28c598..bd529189a2b 100644
--- a/pkg/front_end/testcases/inference/infer_assign_to_property_null_aware.dart.strong.expect
+++ b/pkg/front_end/testcases/inference/infer_assign_to_property_null_aware.dart.strong.expect
@@ -3,12 +3,12 @@ import self as self;
 import "dart:core" as core;
 
 class A extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
 }
 class B extends self::A {
-  constructor •() → void
+  default constructor •() → void
     : super self::A::•()
     ;
   operator +(self::C v) → self::A
@@ -21,13 +21,13 @@ class B extends self::A {
     return null;
 }
 class C extends self::B {
-  constructor •() → void
+  default constructor •() → void
     : super self::B::•()
     ;
 }
 class Test extends core::Object {
   field self::B member = null;
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
   static method test(self::Test t) → void {
diff --git a/pkg/front_end/testcases/inference/infer_assign_to_property_null_aware_upwards.dart.direct.expect b/pkg/front_end/testcases/inference/infer_assign_to_property_null_aware_upwards.dart.direct.expect
index 6812aa34a4e..69e8b66aa50 100644
--- a/pkg/front_end/testcases/inference/infer_assign_to_property_null_aware_upwards.dart.direct.expect
+++ b/pkg/front_end/testcases/inference/infer_assign_to_property_null_aware_upwards.dart.direct.expect
@@ -4,7 +4,7 @@ import "dart:core" as core;
 
 class Test1 extends core::Object {
   field core::int prop = null;
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
   static method test(self::Test1 t) → void {
@@ -20,7 +20,7 @@ class Test1 extends core::Object {
 }
 class Test2 extends core::Object {
   field core::num prop = null;
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
   static method test(self::Test2 t) → void {
@@ -39,7 +39,7 @@ class Test2 extends core::Object {
 }
 class Test3 extends core::Object {
   field core::double prop = null;
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
   static method test3(self::Test3 t) → void {
diff --git a/pkg/front_end/testcases/inference/infer_assign_to_property_null_aware_upwards.dart.outline.expect b/pkg/front_end/testcases/inference/infer_assign_to_property_null_aware_upwards.dart.outline.expect
index 18b6e6406d2..fb5172db488 100644
--- a/pkg/front_end/testcases/inference/infer_assign_to_property_null_aware_upwards.dart.outline.expect
+++ b/pkg/front_end/testcases/inference/infer_assign_to_property_null_aware_upwards.dart.outline.expect
@@ -4,21 +4,21 @@ import "dart:core" as core;
 
 class Test1 extends core::Object {
   field core::int prop;
-  constructor •() → void
+  default constructor •() → void
     ;
   static method test(self::Test1 t) → void
     ;
 }
 class Test2 extends core::Object {
   field core::num prop;
-  constructor •() → void
+  default constructor •() → void
     ;
   static method test(self::Test2 t) → void
     ;
 }
 class Test3 extends core::Object {
   field core::double prop;
-  constructor •() → void
+  default constructor •() → void
     ;
   static method test3(self::Test3 t) → void
     ;
diff --git a/pkg/front_end/testcases/inference/infer_assign_to_property_null_aware_upwards.dart.strong.expect b/pkg/front_end/testcases/inference/infer_assign_to_property_null_aware_upwards.dart.strong.expect
index 4cd5c47dd02..7108b7ce65e 100644
--- a/pkg/front_end/testcases/inference/infer_assign_to_property_null_aware_upwards.dart.strong.expect
+++ b/pkg/front_end/testcases/inference/infer_assign_to_property_null_aware_upwards.dart.strong.expect
@@ -4,7 +4,7 @@ import "dart:core" as core;
 
 class Test1 extends core::Object {
   field core::int prop = null;
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
   static method test(self::Test1 t) → void {
@@ -20,7 +20,7 @@ class Test1 extends core::Object {
 }
 class Test2 extends core::Object {
   field core::num prop = null;
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
   static method test(self::Test2 t) → void {
@@ -39,7 +39,7 @@ class Test2 extends core::Object {
 }
 class Test3 extends core::Object {
   field core::double prop = null;
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
   static method test3(self::Test3 t) → void {
diff --git a/pkg/front_end/testcases/inference/infer_assign_to_property_super.dart.direct.expect b/pkg/front_end/testcases/inference/infer_assign_to_property_super.dart.direct.expect
index 665bf015c6c..ecb66082bc2 100644
--- a/pkg/front_end/testcases/inference/infer_assign_to_property_super.dart.direct.expect
+++ b/pkg/front_end/testcases/inference/infer_assign_to_property_super.dart.direct.expect
@@ -3,12 +3,12 @@ import self as self;
 import "dart:core" as core;
 
 class A extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
 }
 class B extends self::A {
-  constructor •() → void
+  default constructor •() → void
     : super self::A::•()
     ;
   operator +(self::C v) → self::A
@@ -21,18 +21,18 @@ class B extends self::A {
     return null;
 }
 class C extends self::B {
-  constructor •() → void
+  default constructor •() → void
     : super self::B::•()
     ;
 }
 class Base extends core::Object {
   field self::B member = null;
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
 }
 class Test extends self::Base {
-  constructor •() → void
+  default constructor •() → void
     : super self::Base::•()
     ;
   method test() → void {
diff --git a/pkg/front_end/testcases/inference/infer_assign_to_property_super.dart.outline.expect b/pkg/front_end/testcases/inference/infer_assign_to_property_super.dart.outline.expect
index 985e4dacf9e..1337d5613d6 100644
--- a/pkg/front_end/testcases/inference/infer_assign_to_property_super.dart.outline.expect
+++ b/pkg/front_end/testcases/inference/infer_assign_to_property_super.dart.outline.expect
@@ -3,11 +3,11 @@ import self as self;
 import "dart:core" as core;
 
 class A extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     ;
 }
 class B extends self::A {
-  constructor •() → void
+  default constructor •() → void
     ;
   operator +(self::C v) → self::A
     ;
@@ -19,16 +19,16 @@ class B extends self::A {
     ;
 }
 class C extends self::B {
-  constructor •() → void
+  default constructor •() → void
     ;
 }
 class Base extends core::Object {
   field self::B member;
-  constructor •() → void
+  default constructor •() → void
     ;
 }
 class Test extends self::Base {
-  constructor •() → void
+  default constructor •() → void
     ;
   method test() → void
     ;
diff --git a/pkg/front_end/testcases/inference/infer_assign_to_property_super.dart.strong.expect b/pkg/front_end/testcases/inference/infer_assign_to_property_super.dart.strong.expect
index 512500459e2..382ebdf3119 100644
--- a/pkg/front_end/testcases/inference/infer_assign_to_property_super.dart.strong.expect
+++ b/pkg/front_end/testcases/inference/infer_assign_to_property_super.dart.strong.expect
@@ -3,12 +3,12 @@ import self as self;
 import "dart:core" as core;
 
 class A extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
 }
 class B extends self::A {
-  constructor •() → void
+  default constructor •() → void
     : super self::A::•()
     ;
   operator +(self::C v) → self::A
@@ -21,18 +21,18 @@ class B extends self::A {
     return null;
 }
 class C extends self::B {
-  constructor •() → void
+  default constructor •() → void
     : super self::B::•()
     ;
 }
 class Base extends core::Object {
   field self::B member = null;
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
 }
 class Test extends self::Base {
-  constructor •() → void
+  default constructor •() → void
     : super self::Base::•()
     ;
   method test() → void {
diff --git a/pkg/front_end/testcases/inference/infer_assign_to_property_super_upwards.dart.direct.expect b/pkg/front_end/testcases/inference/infer_assign_to_property_super_upwards.dart.direct.expect
index a156be61ce6..1402364b7f8 100644
--- a/pkg/front_end/testcases/inference/infer_assign_to_property_super_upwards.dart.direct.expect
+++ b/pkg/front_end/testcases/inference/infer_assign_to_property_super_upwards.dart.direct.expect
@@ -6,12 +6,12 @@ class Base extends core::Object {
   field core::int intProp = null;
   field core::num numProp = null;
   field core::double doubleProp = null;
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
 }
 class Test1 extends self::Base {
-  constructor •() → void
+  default constructor •() → void
     : super self::Base::•()
     ;
   method test() → void {
@@ -26,7 +26,7 @@ class Test1 extends self::Base {
   }
 }
 class Test2 extends self::Base {
-  constructor •() → void
+  default constructor •() → void
     : super self::Base::•()
     ;
   method test() → void {
@@ -44,7 +44,7 @@ class Test2 extends self::Base {
   }
 }
 class Test3 extends self::Base {
-  constructor •() → void
+  default constructor •() → void
     : super self::Base::•()
     ;
   method test3() → void {
diff --git a/pkg/front_end/testcases/inference/infer_assign_to_property_super_upwards.dart.outline.expect b/pkg/front_end/testcases/inference/infer_assign_to_property_super_upwards.dart.outline.expect
index 4156b1bba74..c4fdca175bf 100644
--- a/pkg/front_end/testcases/inference/infer_assign_to_property_super_upwards.dart.outline.expect
+++ b/pkg/front_end/testcases/inference/infer_assign_to_property_super_upwards.dart.outline.expect
@@ -6,23 +6,23 @@ class Base extends core::Object {
   field core::int intProp;
   field core::num numProp;
   field core::double doubleProp;
-  constructor •() → void
+  default constructor •() → void
     ;
 }
 class Test1 extends self::Base {
-  constructor •() → void
+  default constructor •() → void
     ;
   method test() → void
     ;
 }
 class Test2 extends self::Base {
-  constructor •() → void
+  default constructor •() → void
     ;
   method test() → void
     ;
 }
 class Test3 extends self::Base {
-  constructor •() → void
+  default constructor •() → void
     ;
   method test3() → void
     ;
diff --git a/pkg/front_end/testcases/inference/infer_assign_to_property_super_upwards.dart.strong.expect b/pkg/front_end/testcases/inference/infer_assign_to_property_super_upwards.dart.strong.expect
index 8ac7102774c..353d074d317 100644
--- a/pkg/front_end/testcases/inference/infer_assign_to_property_super_upwards.dart.strong.expect
+++ b/pkg/front_end/testcases/inference/infer_assign_to_property_super_upwards.dart.strong.expect
@@ -6,12 +6,12 @@ class Base extends core::Object {
   field core::int intProp = null;
   field core::num numProp = null;
   field core::double doubleProp = null;
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
 }
 class Test1 extends self::Base {
-  constructor •() → void
+  default constructor •() → void
     : super self::Base::•()
     ;
   method test() → void {
@@ -26,7 +26,7 @@ class Test1 extends self::Base {
   }
 }
 class Test2 extends self::Base {
-  constructor •() → void
+  default constructor •() → void
     : super self::Base::•()
     ;
   method test() → void {
@@ -44,7 +44,7 @@ class Test2 extends self::Base {
   }
 }
 class Test3 extends self::Base {
-  constructor •() → void
+  default constructor •() → void
     : super self::Base::•()
     ;
   method test3() → void {
diff --git a/pkg/front_end/testcases/inference/infer_assign_to_property_upwards.dart.direct.expect b/pkg/front_end/testcases/inference/infer_assign_to_property_upwards.dart.direct.expect
index 5629d0cd38c..7403609ade3 100644
--- a/pkg/front_end/testcases/inference/infer_assign_to_property_upwards.dart.direct.expect
+++ b/pkg/front_end/testcases/inference/infer_assign_to_property_upwards.dart.direct.expect
@@ -4,7 +4,7 @@ import "dart:core" as core;
 
 class Test1 extends core::Object {
   field core::int prop = null;
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
   static method test(self::Test1 t) → void {
@@ -20,7 +20,7 @@ class Test1 extends core::Object {
 }
 class Test2 extends core::Object {
   field core::num prop = null;
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
   static method test(self::Test2 t) → void {
@@ -39,7 +39,7 @@ class Test2 extends core::Object {
 }
 class Test3 extends core::Object {
   field core::double prop = null;
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
   static method test3(self::Test3 t) → void {
diff --git a/pkg/front_end/testcases/inference/infer_assign_to_property_upwards.dart.outline.expect b/pkg/front_end/testcases/inference/infer_assign_to_property_upwards.dart.outline.expect
index 18b6e6406d2..fb5172db488 100644
--- a/pkg/front_end/testcases/inference/infer_assign_to_property_upwards.dart.outline.expect
+++ b/pkg/front_end/testcases/inference/infer_assign_to_property_upwards.dart.outline.expect
@@ -4,21 +4,21 @@ import "dart:core" as core;
 
 class Test1 extends core::Object {
   field core::int prop;
-  constructor •() → void
+  default constructor •() → void
     ;
   static method test(self::Test1 t) → void
     ;
 }
 class Test2 extends core::Object {
   field core::num prop;
-  constructor •() → void
+  default constructor •() → void
     ;
   static method test(self::Test2 t) → void
     ;
 }
 class Test3 extends core::Object {
   field core::double prop;
-  constructor •() → void
+  default constructor •() → void
     ;
   static method test3(self::Test3 t) → void
     ;
diff --git a/pkg/front_end/testcases/inference/infer_assign_to_property_upwards.dart.strong.expect b/pkg/front_end/testcases/inference/infer_assign_to_property_upwards.dart.strong.expect
index 050f3143846..764db73cbdd 100644
--- a/pkg/front_end/testcases/inference/infer_assign_to_property_upwards.dart.strong.expect
+++ b/pkg/front_end/testcases/inference/infer_assign_to_property_upwards.dart.strong.expect
@@ -4,7 +4,7 @@ import "dart:core" as core;
 
 class Test1 extends core::Object {
   field core::int prop = null;
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
   static method test(self::Test1 t) → void {
@@ -20,7 +20,7 @@ class Test1 extends core::Object {
 }
 class Test2 extends core::Object {
   field core::num prop = null;
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
   static method test(self::Test2 t) → void {
@@ -39,7 +39,7 @@ class Test2 extends core::Object {
 }
 class Test3 extends core::Object {
   field core::double prop = null;
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
   static method test3(self::Test3 t) → void {
diff --git a/pkg/front_end/testcases/inference/infer_assign_to_ref.dart.strong.expect b/pkg/front_end/testcases/inference/infer_assign_to_ref.dart.strong.expect
index 87ca7eacb81..e5575542016 100644
--- a/pkg/front_end/testcases/inference/infer_assign_to_ref.dart.strong.expect
+++ b/pkg/front_end/testcases/inference/infer_assign_to_ref.dart.strong.expect
@@ -4,7 +4,7 @@ import "dart:core" as core;
 
 class A extends core::Object {
   field core::int f = null;
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
 }
diff --git a/pkg/front_end/testcases/inference/infer_assign_to_static.dart.direct.expect b/pkg/front_end/testcases/inference/infer_assign_to_static.dart.direct.expect
index 2112fa6f2de..c605a6e4a3a 100644
--- a/pkg/front_end/testcases/inference/infer_assign_to_static.dart.direct.expect
+++ b/pkg/front_end/testcases/inference/infer_assign_to_static.dart.direct.expect
@@ -3,13 +3,13 @@ import self as self;
 import "dart:core" as core;
 
 class A extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
 }
 class B extends self::A {
   static field self::B staticVariable = null;
-  constructor •() → void
+  default constructor •() → void
     : super self::A::•()
     ;
   operator +(self::C v) → self::A
@@ -22,7 +22,7 @@ class B extends self::A {
     return null;
 }
 class C extends self::B {
-  constructor •() → void
+  default constructor •() → void
     : super self::B::•()
     ;
 }
diff --git a/pkg/front_end/testcases/inference/infer_assign_to_static.dart.outline.expect b/pkg/front_end/testcases/inference/infer_assign_to_static.dart.outline.expect
index 04038150151..a4f35a66ec8 100644
--- a/pkg/front_end/testcases/inference/infer_assign_to_static.dart.outline.expect
+++ b/pkg/front_end/testcases/inference/infer_assign_to_static.dart.outline.expect
@@ -3,12 +3,12 @@ import self as self;
 import "dart:core" as core;
 
 class A extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     ;
 }
 class B extends self::A {
   static field self::B staticVariable;
-  constructor •() → void
+  default constructor •() → void
     ;
   operator +(self::C v) → self::A
     ;
@@ -20,7 +20,7 @@ class B extends self::A {
     ;
 }
 class C extends self::B {
-  constructor •() → void
+  default constructor •() → void
     ;
 }
 static field self::B topLevelVariable;
diff --git a/pkg/front_end/testcases/inference/infer_assign_to_static.dart.strong.expect b/pkg/front_end/testcases/inference/infer_assign_to_static.dart.strong.expect
index 25c6b2e8c85..fe3b98bb30d 100644
--- a/pkg/front_end/testcases/inference/infer_assign_to_static.dart.strong.expect
+++ b/pkg/front_end/testcases/inference/infer_assign_to_static.dart.strong.expect
@@ -3,13 +3,13 @@ import self as self;
 import "dart:core" as core;
 
 class A extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
 }
 class B extends self::A {
   static field self::B staticVariable = null;
-  constructor •() → void
+  default constructor •() → void
     : super self::A::•()
     ;
   operator +(self::C v) → self::A
@@ -22,7 +22,7 @@ class B extends self::A {
     return null;
 }
 class C extends self::B {
-  constructor •() → void
+  default constructor •() → void
     : super self::B::•()
     ;
 }
diff --git a/pkg/front_end/testcases/inference/infer_binary_custom.dart.strong.expect b/pkg/front_end/testcases/inference/infer_binary_custom.dart.strong.expect
index e1373c15749..c382212c403 100644
--- a/pkg/front_end/testcases/inference/infer_binary_custom.dart.strong.expect
+++ b/pkg/front_end/testcases/inference/infer_binary_custom.dart.strong.expect
@@ -3,7 +3,7 @@ import self as self;
 import "dart:core" as core;
 
 class A extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
   operator +(dynamic other) → core::int
diff --git a/pkg/front_end/testcases/inference/infer_correctly_on_multiple_variables_declared_together.dart.strong.expect b/pkg/front_end/testcases/inference/infer_correctly_on_multiple_variables_declared_together.dart.strong.expect
index 14bf5121ded..c55324428f1 100644
--- a/pkg/front_end/testcases/inference/infer_correctly_on_multiple_variables_declared_together.dart.strong.expect
+++ b/pkg/front_end/testcases/inference/infer_correctly_on_multiple_variables_declared_together.dart.strong.expect
@@ -6,7 +6,7 @@ class A extends core::Object {
   field dynamic x = null;
   field core::int y = 2;
   field core::String z = "hi";
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
 }
@@ -15,7 +15,7 @@ class B extends core::Object implements self::A {
   field core::int y = 3;
   field core::String z = null;
   field core::int w = 2;
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
 }
diff --git a/pkg/front_end/testcases/inference/infer_field_from_later_inferred_field.dart.direct.expect b/pkg/front_end/testcases/inference/infer_field_from_later_inferred_field.dart.direct.expect
index d466b250024..7ef40b07122 100644
--- a/pkg/front_end/testcases/inference/infer_field_from_later_inferred_field.dart.direct.expect
+++ b/pkg/front_end/testcases/inference/infer_field_from_later_inferred_field.dart.direct.expect
@@ -4,13 +4,13 @@ import "dart:core" as core;
 
 class A extends core::Object implements self::B {
   field dynamic x = null;
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
 }
 class B extends core::Object {
   field dynamic x = 0;
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
 }
diff --git a/pkg/front_end/testcases/inference/infer_field_from_later_inferred_field.dart.outline.expect b/pkg/front_end/testcases/inference/infer_field_from_later_inferred_field.dart.outline.expect
index 89e05537e19..bffb4a04c0e 100644
--- a/pkg/front_end/testcases/inference/infer_field_from_later_inferred_field.dart.outline.expect
+++ b/pkg/front_end/testcases/inference/infer_field_from_later_inferred_field.dart.outline.expect
@@ -4,12 +4,12 @@ import "dart:core" as core;
 
 class A extends core::Object implements self::B {
   field dynamic x;
-  constructor •() → void
+  default constructor •() → void
     ;
 }
 class B extends core::Object {
   field dynamic x;
-  constructor •() → void
+  default constructor •() → void
     ;
 }
 static method main() → dynamic
diff --git a/pkg/front_end/testcases/inference/infer_field_from_later_inferred_field.dart.strong.expect b/pkg/front_end/testcases/inference/infer_field_from_later_inferred_field.dart.strong.expect
index b3b358e2fd6..bcaae95b9f3 100644
--- a/pkg/front_end/testcases/inference/infer_field_from_later_inferred_field.dart.strong.expect
+++ b/pkg/front_end/testcases/inference/infer_field_from_later_inferred_field.dart.strong.expect
@@ -4,13 +4,13 @@ import "dart:core" as core;
 
 class A extends core::Object implements self::B {
   field core::int x = null;
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
 }
 class B extends core::Object {
   field core::int x = 0;
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
 }
diff --git a/pkg/front_end/testcases/inference/infer_field_from_later_inferred_getter.dart.direct.expect b/pkg/front_end/testcases/inference/infer_field_from_later_inferred_getter.dart.direct.expect
index b359bd3906c..8c8ae68cfb1 100644
--- a/pkg/front_end/testcases/inference/infer_field_from_later_inferred_getter.dart.direct.expect
+++ b/pkg/front_end/testcases/inference/infer_field_from_later_inferred_getter.dart.direct.expect
@@ -4,18 +4,18 @@ import "dart:core" as core;
 
 class A extends core::Object implements self::B {
   field dynamic x = null;
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
 }
 abstract class B extends core::Object implements self::C {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
   abstract get x() → dynamic;
 }
 abstract class C extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
   abstract get x() → core::int;
diff --git a/pkg/front_end/testcases/inference/infer_field_from_later_inferred_getter.dart.outline.expect b/pkg/front_end/testcases/inference/infer_field_from_later_inferred_getter.dart.outline.expect
index d3b9d4d9975..20511fffed3 100644
--- a/pkg/front_end/testcases/inference/infer_field_from_later_inferred_getter.dart.outline.expect
+++ b/pkg/front_end/testcases/inference/infer_field_from_later_inferred_getter.dart.outline.expect
@@ -4,16 +4,16 @@ import "dart:core" as core;
 
 class A extends core::Object implements self::B {
   field dynamic x;
-  constructor •() → void
+  default constructor •() → void
     ;
 }
 abstract class B extends core::Object implements self::C {
-  constructor •() → void
+  default constructor •() → void
     ;
   abstract get x() → dynamic;
 }
 abstract class C extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     ;
   abstract get x() → core::int;
 }
diff --git a/pkg/front_end/testcases/inference/infer_field_from_later_inferred_getter.dart.strong.expect b/pkg/front_end/testcases/inference/infer_field_from_later_inferred_getter.dart.strong.expect
index 556a1432f1c..636f05930fb 100644
--- a/pkg/front_end/testcases/inference/infer_field_from_later_inferred_getter.dart.strong.expect
+++ b/pkg/front_end/testcases/inference/infer_field_from_later_inferred_getter.dart.strong.expect
@@ -4,18 +4,18 @@ import "dart:core" as core;
 
 class A extends core::Object implements self::B {
   field core::int x = null;
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
 }
 abstract class B extends core::Object implements self::C {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
   abstract get x() → core::int;
 }
 abstract class C extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
   abstract get x() → core::int;
diff --git a/pkg/front_end/testcases/inference/infer_field_from_later_inferred_setter.dart.direct.expect b/pkg/front_end/testcases/inference/infer_field_from_later_inferred_setter.dart.direct.expect
index 09f014afe2a..61de7b3f885 100644
--- a/pkg/front_end/testcases/inference/infer_field_from_later_inferred_setter.dart.direct.expect
+++ b/pkg/front_end/testcases/inference/infer_field_from_later_inferred_setter.dart.direct.expect
@@ -4,18 +4,18 @@ import "dart:core" as core;
 
 class A extends core::Object implements self::B {
   field dynamic x = null;
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
 }
 abstract class B extends core::Object implements self::C {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
   abstract set x(dynamic value) → void;
 }
 abstract class C extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
   abstract set x(core::int value) → void;
diff --git a/pkg/front_end/testcases/inference/infer_field_from_later_inferred_setter.dart.outline.expect b/pkg/front_end/testcases/inference/infer_field_from_later_inferred_setter.dart.outline.expect
index 4ba0fda18f2..5f8dbe9e9c6 100644
--- a/pkg/front_end/testcases/inference/infer_field_from_later_inferred_setter.dart.outline.expect
+++ b/pkg/front_end/testcases/inference/infer_field_from_later_inferred_setter.dart.outline.expect
@@ -4,16 +4,16 @@ import "dart:core" as core;
 
 class A extends core::Object implements self::B {
   field dynamic x;
-  constructor •() → void
+  default constructor •() → void
     ;
 }
 abstract class B extends core::Object implements self::C {
-  constructor •() → void
+  default constructor •() → void
     ;
   abstract set x(dynamic value) → void;
 }
 abstract class C extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     ;
   abstract set x(core::int value) → void;
 }
diff --git a/pkg/front_end/testcases/inference/infer_field_from_later_inferred_setter.dart.strong.expect b/pkg/front_end/testcases/inference/infer_field_from_later_inferred_setter.dart.strong.expect
index 907a62030e7..6dc06833b73 100644
--- a/pkg/front_end/testcases/inference/infer_field_from_later_inferred_setter.dart.strong.expect
+++ b/pkg/front_end/testcases/inference/infer_field_from_later_inferred_setter.dart.strong.expect
@@ -4,18 +4,18 @@ import "dart:core" as core;
 
 class A extends core::Object implements self::B {
   field core::int x = null;
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
 }
 abstract class B extends core::Object implements self::C {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
   abstract set x(core::int value) → void;
 }
 abstract class C extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
   abstract set x(core::int value) → void;
diff --git a/pkg/front_end/testcases/inference/infer_field_getter_setter_mismatch.dart.direct.expect b/pkg/front_end/testcases/inference/infer_field_getter_setter_mismatch.dart.direct.expect
index 843617d6f8f..675b0e3f336 100644
--- a/pkg/front_end/testcases/inference/infer_field_getter_setter_mismatch.dart.direct.expect
+++ b/pkg/front_end/testcases/inference/infer_field_getter_setter_mismatch.dart.direct.expect
@@ -3,7 +3,7 @@ import self as self;
 import "dart:core" as core;
 
 abstract class A extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
   abstract get x() → core::int;
@@ -11,7 +11,7 @@ abstract class A extends core::Object {
 }
 class B extends self::A {
   field dynamic x = null;
-  constructor •() → void
+  default constructor •() → void
     : super self::A::•()
     ;
 }
diff --git a/pkg/front_end/testcases/inference/infer_field_getter_setter_mismatch.dart.outline.expect b/pkg/front_end/testcases/inference/infer_field_getter_setter_mismatch.dart.outline.expect
index 90cca385c90..8f8c05cb83e 100644
--- a/pkg/front_end/testcases/inference/infer_field_getter_setter_mismatch.dart.outline.expect
+++ b/pkg/front_end/testcases/inference/infer_field_getter_setter_mismatch.dart.outline.expect
@@ -3,14 +3,14 @@ import self as self;
 import "dart:core" as core;
 
 abstract class A extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     ;
   abstract get x() → core::int;
   abstract set x(core::double value) → void;
 }
 class B extends self::A {
   field dynamic x;
-  constructor •() → void
+  default constructor •() → void
     ;
 }
 static method main() → dynamic
diff --git a/pkg/front_end/testcases/inference/infer_field_getter_setter_mismatch.dart.strong.expect b/pkg/front_end/testcases/inference/infer_field_getter_setter_mismatch.dart.strong.expect
index 843617d6f8f..675b0e3f336 100644
--- a/pkg/front_end/testcases/inference/infer_field_getter_setter_mismatch.dart.strong.expect
+++ b/pkg/front_end/testcases/inference/infer_field_getter_setter_mismatch.dart.strong.expect
@@ -3,7 +3,7 @@ import self as self;
 import "dart:core" as core;
 
 abstract class A extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
   abstract get x() → core::int;
@@ -11,7 +11,7 @@ abstract class A extends core::Object {
 }
 class B extends self::A {
   field dynamic x = null;
-  constructor •() → void
+  default constructor •() → void
     : super self::A::•()
     ;
 }
diff --git a/pkg/front_end/testcases/inference/infer_field_override_getter_overrides_setter.dart.direct.expect b/pkg/front_end/testcases/inference/infer_field_override_getter_overrides_setter.dart.direct.expect
index a0482c08cd1..980cc01ce99 100644
--- a/pkg/front_end/testcases/inference/infer_field_override_getter_overrides_setter.dart.direct.expect
+++ b/pkg/front_end/testcases/inference/infer_field_override_getter_overrides_setter.dart.direct.expect
@@ -3,20 +3,20 @@ import self as self;
 import "dart:core" as core;
 
 abstract class A extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
   abstract set x(core::num value) → void;
 }
 abstract class B extends self::A {
-  constructor •() → void
+  default constructor •() → void
     : super self::A::•()
     ;
   abstract get x() → core::int;
 }
 class C extends self::B {
   field dynamic x = null;
-  constructor •() → void
+  default constructor •() → void
     : super self::B::•()
     ;
 }
diff --git a/pkg/front_end/testcases/inference/infer_field_override_getter_overrides_setter.dart.outline.expect b/pkg/front_end/testcases/inference/infer_field_override_getter_overrides_setter.dart.outline.expect
index c66baee52f5..cad0e619ee7 100644
--- a/pkg/front_end/testcases/inference/infer_field_override_getter_overrides_setter.dart.outline.expect
+++ b/pkg/front_end/testcases/inference/infer_field_override_getter_overrides_setter.dart.outline.expect
@@ -3,18 +3,18 @@ import self as self;
 import "dart:core" as core;
 
 abstract class A extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     ;
   abstract set x(core::num value) → void;
 }
 abstract class B extends self::A {
-  constructor •() → void
+  default constructor •() → void
     ;
   abstract get x() → core::int;
 }
 class C extends self::B {
   field dynamic x;
-  constructor •() → void
+  default constructor •() → void
     ;
 }
 static method main() → dynamic
diff --git a/pkg/front_end/testcases/inference/infer_field_override_getter_overrides_setter.dart.strong.expect b/pkg/front_end/testcases/inference/infer_field_override_getter_overrides_setter.dart.strong.expect
index a0482c08cd1..980cc01ce99 100644
--- a/pkg/front_end/testcases/inference/infer_field_override_getter_overrides_setter.dart.strong.expect
+++ b/pkg/front_end/testcases/inference/infer_field_override_getter_overrides_setter.dart.strong.expect
@@ -3,20 +3,20 @@ import self as self;
 import "dart:core" as core;
 
 abstract class A extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
   abstract set x(core::num value) → void;
 }
 abstract class B extends self::A {
-  constructor •() → void
+  default constructor •() → void
     : super self::A::•()
     ;
   abstract get x() → core::int;
 }
 class C extends self::B {
   field dynamic x = null;
-  constructor •() → void
+  default constructor •() → void
     : super self::B::•()
     ;
 }
diff --git a/pkg/front_end/testcases/inference/infer_field_override_multiple.dart.direct.expect b/pkg/front_end/testcases/inference/infer_field_override_multiple.dart.direct.expect
index 27bcb1e4627..0edb4f1a3a2 100644
--- a/pkg/front_end/testcases/inference/infer_field_override_multiple.dart.direct.expect
+++ b/pkg/front_end/testcases/inference/infer_field_override_multiple.dart.direct.expect
@@ -3,50 +3,50 @@ import self as self;
 import "dart:core" as core;
 
 abstract class A extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
   abstract get x() → core::int;
 }
 abstract class B extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
   abstract get x() → core::int;
 }
 abstract class C extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
   abstract get x() → core::num;
 }
 abstract class D extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
   abstract get x() → core::double;
 }
 class E extends self::A implements self::B {
   field dynamic x = null;
-  constructor •() → void
+  default constructor •() → void
     : super self::A::•()
     ;
 }
 class F extends self::A implements self::C {
   field dynamic x = null;
-  constructor •() → void
+  default constructor •() → void
     : super self::A::•()
     ;
 }
 class G extends self::A implements self::D {
   field dynamic x = null;
-  constructor •() → void
+  default constructor •() → void
     : super self::A::•()
     ;
 }
 class H extends self::C implements self::D {
   field dynamic x = null;
-  constructor •() → void
+  default constructor •() → void
     : super self::C::•()
     ;
 }
diff --git a/pkg/front_end/testcases/inference/infer_field_override_multiple.dart.outline.expect b/pkg/front_end/testcases/inference/infer_field_override_multiple.dart.outline.expect
index 39afce304b5..6328df632e3 100644
--- a/pkg/front_end/testcases/inference/infer_field_override_multiple.dart.outline.expect
+++ b/pkg/front_end/testcases/inference/infer_field_override_multiple.dart.outline.expect
@@ -3,43 +3,43 @@ import self as self;
 import "dart:core" as core;
 
 abstract class A extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     ;
   abstract get x() → core::int;
 }
 abstract class B extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     ;
   abstract get x() → core::int;
 }
 abstract class C extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     ;
   abstract get x() → core::num;
 }
 abstract class D extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     ;
   abstract get x() → core::double;
 }
 class E extends self::A implements self::B {
   field dynamic x;
-  constructor •() → void
+  default constructor •() → void
     ;
 }
 class F extends self::A implements self::C {
   field dynamic x;
-  constructor •() → void
+  default constructor •() → void
     ;
 }
 class G extends self::A implements self::D {
   field dynamic x;
-  constructor •() → void
+  default constructor •() → void
     ;
 }
 class H extends self::C implements self::D {
   field dynamic x;
-  constructor •() → void
+  default constructor •() → void
     ;
 }
 static method main() → dynamic
diff --git a/pkg/front_end/testcases/inference/infer_field_override_multiple.dart.strong.expect b/pkg/front_end/testcases/inference/infer_field_override_multiple.dart.strong.expect
index 38e3cdcd3ae..2897e76e7ab 100644
--- a/pkg/front_end/testcases/inference/infer_field_override_multiple.dart.strong.expect
+++ b/pkg/front_end/testcases/inference/infer_field_override_multiple.dart.strong.expect
@@ -3,50 +3,50 @@ import self as self;
 import "dart:core" as core;
 
 abstract class A extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
   abstract get x() → core::int;
 }
 abstract class B extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
   abstract get x() → core::int;
 }
 abstract class C extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
   abstract get x() → core::num;
 }
 abstract class D extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
   abstract get x() → core::double;
 }
 class E extends self::A implements self::B {
   field core::int x = null;
-  constructor •() → void
+  default constructor •() → void
     : super self::A::•()
     ;
 }
 class F extends self::A implements self::C {
   field dynamic x = null;
-  constructor •() → void
+  default constructor •() → void
     : super self::A::•()
     ;
 }
 class G extends self::A implements self::D {
   field dynamic x = null;
-  constructor •() → void
+  default constructor •() → void
     : super self::A::•()
     ;
 }
 class H extends self::C implements self::D {
   field dynamic x = null;
-  constructor •() → void
+  default constructor •() → void
     : super self::C::•()
     ;
 }
diff --git a/pkg/front_end/testcases/inference/infer_field_override_of_override.dart.direct.expect b/pkg/front_end/testcases/inference/infer_field_override_of_override.dart.direct.expect
index a805ae9a4ee..e3ec77d89a4 100644
--- a/pkg/front_end/testcases/inference/infer_field_override_of_override.dart.direct.expect
+++ b/pkg/front_end/testcases/inference/infer_field_override_of_override.dart.direct.expect
@@ -3,20 +3,20 @@ import self as self;
 import "dart:core" as core;
 
 abstract class A extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
   abstract get x() → core::num;
 }
 abstract class B extends self::A {
-  constructor •() → void
+  default constructor •() → void
     : super self::A::•()
     ;
   abstract get x() → core::int;
 }
 class C extends self::B {
   field dynamic x = null;
-  constructor •() → void
+  default constructor •() → void
     : super self::B::•()
     ;
 }
diff --git a/pkg/front_end/testcases/inference/infer_field_override_of_override.dart.outline.expect b/pkg/front_end/testcases/inference/infer_field_override_of_override.dart.outline.expect
index 46a8ec19668..50235ac2aec 100644
--- a/pkg/front_end/testcases/inference/infer_field_override_of_override.dart.outline.expect
+++ b/pkg/front_end/testcases/inference/infer_field_override_of_override.dart.outline.expect
@@ -3,18 +3,18 @@ import self as self;
 import "dart:core" as core;
 
 abstract class A extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     ;
   abstract get x() → core::num;
 }
 abstract class B extends self::A {
-  constructor •() → void
+  default constructor •() → void
     ;
   abstract get x() → core::int;
 }
 class C extends self::B {
   field dynamic x;
-  constructor •() → void
+  default constructor •() → void
     ;
 }
 static method main() → dynamic
diff --git a/pkg/front_end/testcases/inference/infer_field_override_of_override.dart.strong.expect b/pkg/front_end/testcases/inference/infer_field_override_of_override.dart.strong.expect
index 1362eada098..f4c26fe2b28 100644
--- a/pkg/front_end/testcases/inference/infer_field_override_of_override.dart.strong.expect
+++ b/pkg/front_end/testcases/inference/infer_field_override_of_override.dart.strong.expect
@@ -3,20 +3,20 @@ import self as self;
 import "dart:core" as core;
 
 abstract class A extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
   abstract get x() → core::num;
 }
 abstract class B extends self::A {
-  constructor •() → void
+  default constructor •() → void
     : super self::A::•()
     ;
   abstract get x() → core::int;
 }
 class C extends self::B {
   field core::int x = null;
-  constructor •() → void
+  default constructor •() → void
     : super self::B::•()
     ;
 }
diff --git a/pkg/front_end/testcases/inference/infer_field_override_setter_overrides_getter.dart.direct.expect b/pkg/front_end/testcases/inference/infer_field_override_setter_overrides_getter.dart.direct.expect
index 28c4753ebf0..5b2c2ce7383 100644
--- a/pkg/front_end/testcases/inference/infer_field_override_setter_overrides_getter.dart.direct.expect
+++ b/pkg/front_end/testcases/inference/infer_field_override_setter_overrides_getter.dart.direct.expect
@@ -3,20 +3,20 @@ import self as self;
 import "dart:core" as core;
 
 abstract class A extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
   abstract get x() → core::num;
 }
 abstract class B extends self::A {
-  constructor •() → void
+  default constructor •() → void
     : super self::A::•()
     ;
   abstract set x(core::int value) → void;
 }
 class C extends self::B {
   field dynamic x = null;
-  constructor •() → void
+  default constructor •() → void
     : super self::B::•()
     ;
 }
diff --git a/pkg/front_end/testcases/inference/infer_field_override_setter_overrides_getter.dart.outline.expect b/pkg/front_end/testcases/inference/infer_field_override_setter_overrides_getter.dart.outline.expect
index 584e4e94a3f..1c3629651c3 100644
--- a/pkg/front_end/testcases/inference/infer_field_override_setter_overrides_getter.dart.outline.expect
+++ b/pkg/front_end/testcases/inference/infer_field_override_setter_overrides_getter.dart.outline.expect
@@ -3,18 +3,18 @@ import self as self;
 import "dart:core" as core;
 
 abstract class A extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     ;
   abstract get x() → core::num;
 }
 abstract class B extends self::A {
-  constructor •() → void
+  default constructor •() → void
     ;
   abstract set x(core::int value) → void;
 }
 class C extends self::B {
   field dynamic x;
-  constructor •() → void
+  default constructor •() → void
     ;
 }
 static method main() → dynamic
diff --git a/pkg/front_end/testcases/inference/infer_field_override_setter_overrides_getter.dart.strong.expect b/pkg/front_end/testcases/inference/infer_field_override_setter_overrides_getter.dart.strong.expect
index 28c4753ebf0..5b2c2ce7383 100644
--- a/pkg/front_end/testcases/inference/infer_field_override_setter_overrides_getter.dart.strong.expect
+++ b/pkg/front_end/testcases/inference/infer_field_override_setter_overrides_getter.dart.strong.expect
@@ -3,20 +3,20 @@ import self as self;
 import "dart:core" as core;
 
 abstract class A extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
   abstract get x() → core::num;
 }
 abstract class B extends self::A {
-  constructor •() → void
+  default constructor •() → void
     : super self::A::•()
     ;
   abstract set x(core::int value) → void;
 }
 class C extends self::B {
   field dynamic x = null;
-  constructor •() → void
+  default constructor •() → void
     : super self::B::•()
     ;
 }
diff --git a/pkg/front_end/testcases/inference/infer_field_override_with_substitution.dart.direct.expect b/pkg/front_end/testcases/inference/infer_field_override_with_substitution.dart.direct.expect
index b2139ce22b5..cdb209c44cf 100644
--- a/pkg/front_end/testcases/inference/infer_field_override_with_substitution.dart.direct.expect
+++ b/pkg/front_end/testcases/inference/infer_field_override_with_substitution.dart.direct.expect
@@ -4,7 +4,7 @@ import "dart:core" as core;
 
 abstract class A<T extends core::Object> extends core::Object {
   field core::List<self::A::T> z = null;
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
   abstract get x() → core::List<self::A::T>;
@@ -14,7 +14,7 @@ class B extends self::A<core::int> {
   field dynamic x = null;
   field dynamic y = null;
   field dynamic z = null;
-  constructor •() → void
+  default constructor •() → void
     : super self::A::•()
     ;
 }
diff --git a/pkg/front_end/testcases/inference/infer_field_override_with_substitution.dart.outline.expect b/pkg/front_end/testcases/inference/infer_field_override_with_substitution.dart.outline.expect
index a2e78d4a50d..b09368599e6 100644
--- a/pkg/front_end/testcases/inference/infer_field_override_with_substitution.dart.outline.expect
+++ b/pkg/front_end/testcases/inference/infer_field_override_with_substitution.dart.outline.expect
@@ -4,7 +4,7 @@ import "dart:core" as core;
 
 abstract class A<T extends core::Object> extends core::Object {
   field core::List<self::A::T> z;
-  constructor •() → void
+  default constructor •() → void
     ;
   abstract get x() → core::List<self::A::T>;
   abstract set y(core::List<self::A::T> value) → void;
@@ -13,7 +13,7 @@ class B extends self::A<core::int> {
   field dynamic x;
   field dynamic y;
   field dynamic z;
-  constructor •() → void
+  default constructor •() → void
     ;
 }
 static method main() → dynamic
diff --git a/pkg/front_end/testcases/inference/infer_field_override_with_substitution.dart.strong.expect b/pkg/front_end/testcases/inference/infer_field_override_with_substitution.dart.strong.expect
index 8a200d7d40d..06f6ea4af75 100644
--- a/pkg/front_end/testcases/inference/infer_field_override_with_substitution.dart.strong.expect
+++ b/pkg/front_end/testcases/inference/infer_field_override_with_substitution.dart.strong.expect
@@ -4,7 +4,7 @@ import "dart:core" as core;
 
 abstract class A<T extends core::Object> extends core::Object {
   field core::List<self::A::T> z = null;
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
   abstract get x() → core::List<self::A::T>;
@@ -14,7 +14,7 @@ class B extends self::A<core::int> {
   field core::List<core::int> x = null;
   field core::List<core::int> y = null;
   field core::List<core::int> z = null;
-  constructor •() → void
+  default constructor •() → void
     : super self::A::•()
     ;
 }
diff --git a/pkg/front_end/testcases/inference/infer_field_overrides_getter.dart.direct.expect b/pkg/front_end/testcases/inference/infer_field_overrides_getter.dart.direct.expect
index d92f7e21a2a..6fcd0f5709f 100644
--- a/pkg/front_end/testcases/inference/infer_field_overrides_getter.dart.direct.expect
+++ b/pkg/front_end/testcases/inference/infer_field_overrides_getter.dart.direct.expect
@@ -3,13 +3,13 @@ import self as self;
 import "dart:core" as core;
 
 abstract class A extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
   abstract get x() → core::int;
 }
 class B extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
   get x() → core::int
@@ -17,25 +17,25 @@ class B extends core::Object {
 }
 class C extends self::A {
   field dynamic x = null;
-  constructor •() → void
+  default constructor •() → void
     : super self::A::•()
     ;
 }
 class D extends self::B {
   field dynamic x = null;
-  constructor •() → void
+  default constructor •() → void
     : super self::B::•()
     ;
 }
 class E extends core::Object implements self::A {
   field dynamic x = null;
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
 }
 class F extends core::Object implements self::B {
   field dynamic x = null;
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
 }
@@ -43,7 +43,7 @@ abstract class Object&B = core::Object with self::B {
 }
 class G extends self::Object&B {
   field dynamic x = null;
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
 }
diff --git a/pkg/front_end/testcases/inference/infer_field_overrides_getter.dart.outline.expect b/pkg/front_end/testcases/inference/infer_field_overrides_getter.dart.outline.expect
index 1263a6a5321..f6325d9fc23 100644
--- a/pkg/front_end/testcases/inference/infer_field_overrides_getter.dart.outline.expect
+++ b/pkg/front_end/testcases/inference/infer_field_overrides_getter.dart.outline.expect
@@ -3,41 +3,41 @@ import self as self;
 import "dart:core" as core;
 
 abstract class A extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     ;
   abstract get x() → core::int;
 }
 class B extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     ;
   get x() → core::int
     ;
 }
 class C extends self::A {
   field dynamic x;
-  constructor •() → void
+  default constructor •() → void
     ;
 }
 class D extends self::B {
   field dynamic x;
-  constructor •() → void
+  default constructor •() → void
     ;
 }
 class E extends core::Object implements self::A {
   field dynamic x;
-  constructor •() → void
+  default constructor •() → void
     ;
 }
 class F extends core::Object implements self::B {
   field dynamic x;
-  constructor •() → void
+  default constructor •() → void
     ;
 }
 abstract class Object&B = core::Object with self::B {
 }
 class G extends self::Object&B {
   field dynamic x;
-  constructor •() → void
+  default constructor •() → void
     ;
 }
 static method main() → dynamic
diff --git a/pkg/front_end/testcases/inference/infer_field_overrides_getter.dart.strong.expect b/pkg/front_end/testcases/inference/infer_field_overrides_getter.dart.strong.expect
index 4648fde440a..e0b83866c07 100644
--- a/pkg/front_end/testcases/inference/infer_field_overrides_getter.dart.strong.expect
+++ b/pkg/front_end/testcases/inference/infer_field_overrides_getter.dart.strong.expect
@@ -3,13 +3,13 @@ import self as self;
 import "dart:core" as core;
 
 abstract class A extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
   abstract get x() → core::int;
 }
 class B extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
   get x() → core::int
@@ -17,25 +17,25 @@ class B extends core::Object {
 }
 class C extends self::A {
   field core::int x = null;
-  constructor •() → void
+  default constructor •() → void
     : super self::A::•()
     ;
 }
 class D extends self::B {
   field core::int x = null;
-  constructor •() → void
+  default constructor •() → void
     : super self::B::•()
     ;
 }
 class E extends core::Object implements self::A {
   field core::int x = null;
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
 }
 class F extends core::Object implements self::B {
   field core::int x = null;
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
 }
@@ -43,7 +43,7 @@ abstract class Object&B = core::Object with self::B {
 }
 class G extends self::Object&B {
   field core::int x = null;
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
 }
diff --git a/pkg/front_end/testcases/inference/infer_field_overrides_setter.dart.direct.expect b/pkg/front_end/testcases/inference/infer_field_overrides_setter.dart.direct.expect
index aa153ad78d5..75d9f416141 100644
--- a/pkg/front_end/testcases/inference/infer_field_overrides_setter.dart.direct.expect
+++ b/pkg/front_end/testcases/inference/infer_field_overrides_setter.dart.direct.expect
@@ -3,38 +3,38 @@ import self as self;
 import "dart:core" as core;
 
 abstract class A extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
   abstract set x(core::int value) → void;
 }
 class B extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
   set x(core::int value) → void {}
 }
 class C extends self::A {
   field dynamic x = null;
-  constructor •() → void
+  default constructor •() → void
     : super self::A::•()
     ;
 }
 class D extends self::B {
   field dynamic x = null;
-  constructor •() → void
+  default constructor •() → void
     : super self::B::•()
     ;
 }
 class E extends core::Object implements self::A {
   field dynamic x = null;
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
 }
 class F extends core::Object implements self::B {
   field dynamic x = null;
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
 }
@@ -42,7 +42,7 @@ abstract class Object&B = core::Object with self::B {
 }
 class G extends self::Object&B {
   field dynamic x = null;
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
 }
diff --git a/pkg/front_end/testcases/inference/infer_field_overrides_setter.dart.outline.expect b/pkg/front_end/testcases/inference/infer_field_overrides_setter.dart.outline.expect
index e20e3ac0f2a..ff4a7103495 100644
--- a/pkg/front_end/testcases/inference/infer_field_overrides_setter.dart.outline.expect
+++ b/pkg/front_end/testcases/inference/infer_field_overrides_setter.dart.outline.expect
@@ -3,41 +3,41 @@ import self as self;
 import "dart:core" as core;
 
 abstract class A extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     ;
   abstract set x(core::int value) → void;
 }
 class B extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     ;
   set x(core::int value) → void
     ;
 }
 class C extends self::A {
   field dynamic x;
-  constructor •() → void
+  default constructor •() → void
     ;
 }
 class D extends self::B {
   field dynamic x;
-  constructor •() → void
+  default constructor •() → void
     ;
 }
 class E extends core::Object implements self::A {
   field dynamic x;
-  constructor •() → void
+  default constructor •() → void
     ;
 }
 class F extends core::Object implements self::B {
   field dynamic x;
-  constructor •() → void
+  default constructor •() → void
     ;
 }
 abstract class Object&B = core::Object with self::B {
 }
 class G extends self::Object&B {
   field dynamic x;
-  constructor •() → void
+  default constructor •() → void
     ;
 }
 static method main() → dynamic
diff --git a/pkg/front_end/testcases/inference/infer_field_overrides_setter.dart.strong.expect b/pkg/front_end/testcases/inference/infer_field_overrides_setter.dart.strong.expect
index ad8c22fea0e..0d117a70880 100644
--- a/pkg/front_end/testcases/inference/infer_field_overrides_setter.dart.strong.expect
+++ b/pkg/front_end/testcases/inference/infer_field_overrides_setter.dart.strong.expect
@@ -3,38 +3,38 @@ import self as self;
 import "dart:core" as core;
 
 abstract class A extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
   abstract set x(core::int value) → void;
 }
 class B extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
   set x(core::int value) → void {}
 }
 class C extends self::A {
   field core::int x = null;
-  constructor •() → void
+  default constructor •() → void
     : super self::A::•()
     ;
 }
 class D extends self::B {
   field core::int x = null;
-  constructor •() → void
+  default constructor •() → void
     : super self::B::•()
     ;
 }
 class E extends core::Object implements self::A {
   field core::int x = null;
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
 }
 class F extends core::Object implements self::B {
   field core::int x = null;
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
 }
@@ -42,7 +42,7 @@ abstract class Object&B = core::Object with self::B {
 }
 class G extends self::Object&B {
   field core::int x = null;
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
 }
diff --git a/pkg/front_end/testcases/inference/infer_field_static.dart.direct.expect b/pkg/front_end/testcases/inference/infer_field_static.dart.direct.expect
index a5654ab99ee..5d37485c94c 100644
--- a/pkg/front_end/testcases/inference/infer_field_static.dart.direct.expect
+++ b/pkg/front_end/testcases/inference/infer_field_static.dart.direct.expect
@@ -3,7 +3,7 @@ import self as self;
 import "dart:core" as core;
 
 abstract class A extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
   static get x() → core::int
@@ -11,13 +11,13 @@ abstract class A extends core::Object {
 }
 class B extends self::A {
   static field dynamic x = self::f();
-  constructor •() → void
+  default constructor •() → void
     : super self::A::•()
     ;
 }
 class C extends self::A {
   static field dynamic x = null;
-  constructor •() → void
+  default constructor •() → void
     : super self::A::•()
     ;
 }
diff --git a/pkg/front_end/testcases/inference/infer_field_static.dart.outline.expect b/pkg/front_end/testcases/inference/infer_field_static.dart.outline.expect
index 7972953ce59..077de3ec73b 100644
--- a/pkg/front_end/testcases/inference/infer_field_static.dart.outline.expect
+++ b/pkg/front_end/testcases/inference/infer_field_static.dart.outline.expect
@@ -3,19 +3,19 @@ import self as self;
 import "dart:core" as core;
 
 abstract class A extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     ;
   static get x() → core::int
     ;
 }
 class B extends self::A {
   static field dynamic x;
-  constructor •() → void
+  default constructor •() → void
     ;
 }
 class C extends self::A {
   static field dynamic x;
-  constructor •() → void
+  default constructor •() → void
     ;
 }
 static method f() → dynamic
diff --git a/pkg/front_end/testcases/inference/infer_field_static.dart.strong.expect b/pkg/front_end/testcases/inference/infer_field_static.dart.strong.expect
index a5654ab99ee..5d37485c94c 100644
--- a/pkg/front_end/testcases/inference/infer_field_static.dart.strong.expect
+++ b/pkg/front_end/testcases/inference/infer_field_static.dart.strong.expect
@@ -3,7 +3,7 @@ import self as self;
 import "dart:core" as core;
 
 abstract class A extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
   static get x() → core::int
@@ -11,13 +11,13 @@ abstract class A extends core::Object {
 }
 class B extends self::A {
   static field dynamic x = self::f();
-  constructor •() → void
+  default constructor •() → void
     : super self::A::•()
     ;
 }
 class C extends self::A {
   static field dynamic x = null;
-  constructor •() → void
+  default constructor •() → void
     : super self::A::•()
     ;
 }
diff --git a/pkg/front_end/testcases/inference/infer_final_field_getter_and_setter.dart.direct.expect b/pkg/front_end/testcases/inference/infer_final_field_getter_and_setter.dart.direct.expect
index 217045b9740..07bf1741b68 100644
--- a/pkg/front_end/testcases/inference/infer_final_field_getter_and_setter.dart.direct.expect
+++ b/pkg/front_end/testcases/inference/infer_final_field_getter_and_setter.dart.direct.expect
@@ -3,7 +3,7 @@ import self as self;
 import "dart:core" as core;
 
 abstract class A extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
   abstract get x() → core::int;
diff --git a/pkg/front_end/testcases/inference/infer_final_field_getter_and_setter.dart.outline.expect b/pkg/front_end/testcases/inference/infer_final_field_getter_and_setter.dart.outline.expect
index 4d15c82157c..450141edab0 100644
--- a/pkg/front_end/testcases/inference/infer_final_field_getter_and_setter.dart.outline.expect
+++ b/pkg/front_end/testcases/inference/infer_final_field_getter_and_setter.dart.outline.expect
@@ -3,7 +3,7 @@ import self as self;
 import "dart:core" as core;
 
 abstract class A extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     ;
   abstract get x() → core::int;
   abstract set x(core::double value) → void;
diff --git a/pkg/front_end/testcases/inference/infer_final_field_getter_and_setter.dart.strong.expect b/pkg/front_end/testcases/inference/infer_final_field_getter_and_setter.dart.strong.expect
index 5aa8d734f0b..a98b1d68e7d 100644
--- a/pkg/front_end/testcases/inference/infer_final_field_getter_and_setter.dart.strong.expect
+++ b/pkg/front_end/testcases/inference/infer_final_field_getter_and_setter.dart.strong.expect
@@ -3,7 +3,7 @@ import self as self;
 import "dart:core" as core;
 
 abstract class A extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
   abstract get x() → core::int;
diff --git a/pkg/front_end/testcases/inference/infer_final_field_getter_only.dart.direct.expect b/pkg/front_end/testcases/inference/infer_final_field_getter_only.dart.direct.expect
index 26feec599fb..0985152c0dc 100644
--- a/pkg/front_end/testcases/inference/infer_final_field_getter_only.dart.direct.expect
+++ b/pkg/front_end/testcases/inference/infer_final_field_getter_only.dart.direct.expect
@@ -3,7 +3,7 @@ import self as self;
 import "dart:core" as core;
 
 abstract class A extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
   abstract get x() → core::int;
diff --git a/pkg/front_end/testcases/inference/infer_final_field_getter_only.dart.outline.expect b/pkg/front_end/testcases/inference/infer_final_field_getter_only.dart.outline.expect
index 94417e6e62c..520508ba56d 100644
--- a/pkg/front_end/testcases/inference/infer_final_field_getter_only.dart.outline.expect
+++ b/pkg/front_end/testcases/inference/infer_final_field_getter_only.dart.outline.expect
@@ -3,7 +3,7 @@ import self as self;
 import "dart:core" as core;
 
 abstract class A extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     ;
   abstract get x() → core::int;
 }
diff --git a/pkg/front_end/testcases/inference/infer_final_field_getter_only.dart.strong.expect b/pkg/front_end/testcases/inference/infer_final_field_getter_only.dart.strong.expect
index 11d45a454ff..3b04230f8df 100644
--- a/pkg/front_end/testcases/inference/infer_final_field_getter_only.dart.strong.expect
+++ b/pkg/front_end/testcases/inference/infer_final_field_getter_only.dart.strong.expect
@@ -3,7 +3,7 @@ import self as self;
 import "dart:core" as core;
 
 abstract class A extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
   abstract get x() → core::int;
diff --git a/pkg/front_end/testcases/inference/infer_final_field_setter_only.dart.direct.expect b/pkg/front_end/testcases/inference/infer_final_field_setter_only.dart.direct.expect
index 6dfb8f50588..f9ce64e6b4d 100644
--- a/pkg/front_end/testcases/inference/infer_final_field_setter_only.dart.direct.expect
+++ b/pkg/front_end/testcases/inference/infer_final_field_setter_only.dart.direct.expect
@@ -3,7 +3,7 @@ import self as self;
 import "dart:core" as core;
 
 abstract class A extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
   abstract set x(core::double value) → void;
diff --git a/pkg/front_end/testcases/inference/infer_final_field_setter_only.dart.outline.expect b/pkg/front_end/testcases/inference/infer_final_field_setter_only.dart.outline.expect
index e61ebe32729..fb35f43a461 100644
--- a/pkg/front_end/testcases/inference/infer_final_field_setter_only.dart.outline.expect
+++ b/pkg/front_end/testcases/inference/infer_final_field_setter_only.dart.outline.expect
@@ -3,7 +3,7 @@ import self as self;
 import "dart:core" as core;
 
 abstract class A extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     ;
   abstract set x(core::double value) → void;
 }
diff --git a/pkg/front_end/testcases/inference/infer_final_field_setter_only.dart.strong.expect b/pkg/front_end/testcases/inference/infer_final_field_setter_only.dart.strong.expect
index 99b59e7a1db..94ebb54dc8a 100644
--- a/pkg/front_end/testcases/inference/infer_final_field_setter_only.dart.strong.expect
+++ b/pkg/front_end/testcases/inference/infer_final_field_setter_only.dart.strong.expect
@@ -3,7 +3,7 @@ import self as self;
 import "dart:core" as core;
 
 abstract class A extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
   abstract set x(core::double value) → void;
diff --git a/pkg/front_end/testcases/inference/infer_from_complex_expressions_if_outer_most_value_is_precise.dart.strong.expect b/pkg/front_end/testcases/inference/infer_from_complex_expressions_if_outer_most_value_is_precise.dart.strong.expect
index b748ab8efe7..ed7a4e68de1 100644
--- a/pkg/front_end/testcases/inference/infer_from_complex_expressions_if_outer_most_value_is_precise.dart.strong.expect
+++ b/pkg/front_end/testcases/inference/infer_from_complex_expressions_if_outer_most_value_is_precise.dart.strong.expect
@@ -4,7 +4,7 @@ import "dart:core" as core;
 
 class A extends core::Object {
   field core::int x = null;
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
   operator +(dynamic other) → self::B
diff --git a/pkg/front_end/testcases/inference/infer_from_rhs_only_if_it_wont_conflict_with_overridden_fields.dart.strong.expect b/pkg/front_end/testcases/inference/infer_from_rhs_only_if_it_wont_conflict_with_overridden_fields.dart.strong.expect
index a78fd93e8e9..13ffa265633 100644
--- a/pkg/front_end/testcases/inference/infer_from_rhs_only_if_it_wont_conflict_with_overridden_fields.dart.strong.expect
+++ b/pkg/front_end/testcases/inference/infer_from_rhs_only_if_it_wont_conflict_with_overridden_fields.dart.strong.expect
@@ -4,13 +4,13 @@ import "dart:core" as core;
 
 class A extends core::Object {
   field dynamic x = null;
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
 }
 class B extends core::Object implements self::A {
   field dynamic x = 2;
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
 }
diff --git a/pkg/front_end/testcases/inference/infer_from_rhs_only_if_it_wont_conflict_with_overridden_fields2.dart.strong.expect b/pkg/front_end/testcases/inference/infer_from_rhs_only_if_it_wont_conflict_with_overridden_fields2.dart.strong.expect
index 345752becec..89c6ac0d05f 100644
--- a/pkg/front_end/testcases/inference/infer_from_rhs_only_if_it_wont_conflict_with_overridden_fields2.dart.strong.expect
+++ b/pkg/front_end/testcases/inference/infer_from_rhs_only_if_it_wont_conflict_with_overridden_fields2.dart.strong.expect
@@ -4,13 +4,13 @@ import "dart:core" as core;
 
 class A extends core::Object {
   final field dynamic x = null;
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
 }
 class B extends core::Object implements self::A {
   final field dynamic x = 2;
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
 }
diff --git a/pkg/front_end/testcases/inference/infer_from_variables_in_cycle_libs_when_flag_is_on2.dart.strong.expect b/pkg/front_end/testcases/inference/infer_from_variables_in_cycle_libs_when_flag_is_on2.dart.strong.expect
index 8d3ac0ccdf5..368ad39d6d3 100644
--- a/pkg/front_end/testcases/inference/infer_from_variables_in_cycle_libs_when_flag_is_on2.dart.strong.expect
+++ b/pkg/front_end/testcases/inference/infer_from_variables_in_cycle_libs_when_flag_is_on2.dart.strong.expect
@@ -5,7 +5,7 @@ import "./infer_from_variables_in_cycle_libs_when_flag_is_on2_a.dart" as inf;
 
 class B extends core::Object {
   static field core::int y = inf::A::x;
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
 }
diff --git a/pkg/front_end/testcases/inference/infer_from_variables_in_cycle_libs_when_flag_is_on2_a.dart.strong.expect b/pkg/front_end/testcases/inference/infer_from_variables_in_cycle_libs_when_flag_is_on2_a.dart.strong.expect
index ed14f73bd4f..ab59fa40616 100644
--- a/pkg/front_end/testcases/inference/infer_from_variables_in_cycle_libs_when_flag_is_on2_a.dart.strong.expect
+++ b/pkg/front_end/testcases/inference/infer_from_variables_in_cycle_libs_when_flag_is_on2_a.dart.strong.expect
@@ -4,7 +4,7 @@ import "dart:core" as core;
 
 class A extends core::Object {
   static field core::int x = 2;
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
 }
diff --git a/pkg/front_end/testcases/inference/infer_from_variables_in_non_cycle_imports_with_flag2.dart.strong.expect b/pkg/front_end/testcases/inference/infer_from_variables_in_non_cycle_imports_with_flag2.dart.strong.expect
index 8973566ce88..a0c20f918d7 100644
--- a/pkg/front_end/testcases/inference/infer_from_variables_in_non_cycle_imports_with_flag2.dart.strong.expect
+++ b/pkg/front_end/testcases/inference/infer_from_variables_in_non_cycle_imports_with_flag2.dart.strong.expect
@@ -5,7 +5,7 @@ import "./infer_from_variables_in_non_cycle_imports_with_flag2_a.dart" as inf;
 
 class B extends core::Object {
   static field core::int y = inf::A::x;
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
 }
diff --git a/pkg/front_end/testcases/inference/infer_from_variables_in_non_cycle_imports_with_flag2_a.dart.strong.expect b/pkg/front_end/testcases/inference/infer_from_variables_in_non_cycle_imports_with_flag2_a.dart.strong.expect
index ed14f73bd4f..ab59fa40616 100644
--- a/pkg/front_end/testcases/inference/infer_from_variables_in_non_cycle_imports_with_flag2_a.dart.strong.expect
+++ b/pkg/front_end/testcases/inference/infer_from_variables_in_non_cycle_imports_with_flag2_a.dart.strong.expect
@@ -4,7 +4,7 @@ import "dart:core" as core;
 
 class A extends core::Object {
   static field core::int x = 2;
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
 }
diff --git a/pkg/front_end/testcases/inference/infer_generic_method_type_named.dart.strong.expect b/pkg/front_end/testcases/inference/infer_generic_method_type_named.dart.strong.expect
index bd90ebcce5d..d0657f683f6 100644
--- a/pkg/front_end/testcases/inference/infer_generic_method_type_named.dart.strong.expect
+++ b/pkg/front_end/testcases/inference/infer_generic_method_type_named.dart.strong.expect
@@ -3,7 +3,7 @@ import self as self;
 import "dart:core" as core;
 
 class C extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
   method m<T extends core::Object>(core::int a, {core::String b = null, self::C::m::T c = null}) → self::C::m::T
diff --git a/pkg/front_end/testcases/inference/infer_generic_method_type_positional.dart.strong.expect b/pkg/front_end/testcases/inference/infer_generic_method_type_positional.dart.strong.expect
index bab6dbed993..3c7816ed8cf 100644
--- a/pkg/front_end/testcases/inference/infer_generic_method_type_positional.dart.strong.expect
+++ b/pkg/front_end/testcases/inference/infer_generic_method_type_positional.dart.strong.expect
@@ -3,7 +3,7 @@ import self as self;
 import "dart:core" as core;
 
 class C extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
   method m<T extends core::Object>(core::int a, [self::C::m::T b = null]) → self::C::m::T
diff --git a/pkg/front_end/testcases/inference/infer_generic_method_type_positional2.dart.strong.expect b/pkg/front_end/testcases/inference/infer_generic_method_type_positional2.dart.strong.expect
index 566211d60ee..ac561251f06 100644
--- a/pkg/front_end/testcases/inference/infer_generic_method_type_positional2.dart.strong.expect
+++ b/pkg/front_end/testcases/inference/infer_generic_method_type_positional2.dart.strong.expect
@@ -3,7 +3,7 @@ import self as self;
 import "dart:core" as core;
 
 class C extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
   method m<T extends core::Object>(core::int a, [core::String b = null, self::C::m::T c = null]) → self::C::m::T
diff --git a/pkg/front_end/testcases/inference/infer_generic_method_type_required.dart.strong.expect b/pkg/front_end/testcases/inference/infer_generic_method_type_required.dart.strong.expect
index 759ef8611c5..d334bf86d90 100644
--- a/pkg/front_end/testcases/inference/infer_generic_method_type_required.dart.strong.expect
+++ b/pkg/front_end/testcases/inference/infer_generic_method_type_required.dart.strong.expect
@@ -3,7 +3,7 @@ import self as self;
 import "dart:core" as core;
 
 class C extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
   method m<T extends core::Object>(self::C::m::T x) → self::C::m::T
diff --git a/pkg/front_end/testcases/inference/infer_getter_cross_to_setter.dart.direct.expect b/pkg/front_end/testcases/inference/infer_getter_cross_to_setter.dart.direct.expect
index f33d0e9bc30..cc869e8a552 100644
--- a/pkg/front_end/testcases/inference/infer_getter_cross_to_setter.dart.direct.expect
+++ b/pkg/front_end/testcases/inference/infer_getter_cross_to_setter.dart.direct.expect
@@ -3,13 +3,13 @@ import self as self;
 import "dart:core" as core;
 
 abstract class A extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
   abstract set x(core::double value) → void;
 }
 abstract class B extends self::A {
-  constructor •() → void
+  default constructor •() → void
     : super self::A::•()
     ;
   abstract get x() → dynamic;
diff --git a/pkg/front_end/testcases/inference/infer_getter_cross_to_setter.dart.outline.expect b/pkg/front_end/testcases/inference/infer_getter_cross_to_setter.dart.outline.expect
index 2415d2a939e..57937f5eaac 100644
--- a/pkg/front_end/testcases/inference/infer_getter_cross_to_setter.dart.outline.expect
+++ b/pkg/front_end/testcases/inference/infer_getter_cross_to_setter.dart.outline.expect
@@ -3,12 +3,12 @@ import self as self;
 import "dart:core" as core;
 
 abstract class A extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     ;
   abstract set x(core::double value) → void;
 }
 abstract class B extends self::A {
-  constructor •() → void
+  default constructor •() → void
     ;
   abstract get x() → dynamic;
 }
diff --git a/pkg/front_end/testcases/inference/infer_getter_cross_to_setter.dart.strong.expect b/pkg/front_end/testcases/inference/infer_getter_cross_to_setter.dart.strong.expect
index d163d7ff7cb..cf4a67eaa33 100644
--- a/pkg/front_end/testcases/inference/infer_getter_cross_to_setter.dart.strong.expect
+++ b/pkg/front_end/testcases/inference/infer_getter_cross_to_setter.dart.strong.expect
@@ -3,13 +3,13 @@ import self as self;
 import "dart:core" as core;
 
 abstract class A extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
   abstract set x(core::double value) → void;
 }
 abstract class B extends self::A {
-  constructor •() → void
+  default constructor •() → void
     : super self::A::•()
     ;
   abstract get x() → core::double;
diff --git a/pkg/front_end/testcases/inference/infer_getter_from_later_inferred_getter.dart.direct.expect b/pkg/front_end/testcases/inference/infer_getter_from_later_inferred_getter.dart.direct.expect
index 4a214befae6..7fce286fb7a 100644
--- a/pkg/front_end/testcases/inference/infer_getter_from_later_inferred_getter.dart.direct.expect
+++ b/pkg/front_end/testcases/inference/infer_getter_from_later_inferred_getter.dart.direct.expect
@@ -3,20 +3,20 @@ import self as self;
 import "dart:core" as core;
 
 class A extends core::Object implements self::B {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
   get x() → dynamic
     return self::f();
 }
 abstract class B extends core::Object implements self::C {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
   abstract get x() → dynamic;
 }
 abstract class C extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
   abstract get x() → core::int;
diff --git a/pkg/front_end/testcases/inference/infer_getter_from_later_inferred_getter.dart.outline.expect b/pkg/front_end/testcases/inference/infer_getter_from_later_inferred_getter.dart.outline.expect
index 04a7939714e..99f47648dde 100644
--- a/pkg/front_end/testcases/inference/infer_getter_from_later_inferred_getter.dart.outline.expect
+++ b/pkg/front_end/testcases/inference/infer_getter_from_later_inferred_getter.dart.outline.expect
@@ -3,18 +3,18 @@ import self as self;
 import "dart:core" as core;
 
 class A extends core::Object implements self::B {
-  constructor •() → void
+  default constructor •() → void
     ;
   get x() → dynamic
     ;
 }
 abstract class B extends core::Object implements self::C {
-  constructor •() → void
+  default constructor •() → void
     ;
   abstract get x() → dynamic;
 }
 abstract class C extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     ;
   abstract get x() → core::int;
 }
diff --git a/pkg/front_end/testcases/inference/infer_getter_from_later_inferred_getter.dart.strong.expect b/pkg/front_end/testcases/inference/infer_getter_from_later_inferred_getter.dart.strong.expect
index e62a20fc53c..494f789ad68 100644
--- a/pkg/front_end/testcases/inference/infer_getter_from_later_inferred_getter.dart.strong.expect
+++ b/pkg/front_end/testcases/inference/infer_getter_from_later_inferred_getter.dart.strong.expect
@@ -3,20 +3,20 @@ import self as self;
 import "dart:core" as core;
 
 class A extends core::Object implements self::B {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
   get x() → core::int
     return self::f();
 }
 abstract class B extends core::Object implements self::C {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
   abstract get x() → core::int;
 }
 abstract class C extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
   abstract get x() → core::int;
diff --git a/pkg/front_end/testcases/inference/infer_list_literal_nested_in_map_literal.dart.strong.expect b/pkg/front_end/testcases/inference/infer_list_literal_nested_in_map_literal.dart.strong.expect
index 282fe194829..e37fd0912c7 100644
--- a/pkg/front_end/testcases/inference/infer_list_literal_nested_in_map_literal.dart.strong.expect
+++ b/pkg/front_end/testcases/inference/infer_list_literal_nested_in_map_literal.dart.strong.expect
@@ -3,12 +3,12 @@ import self as self;
 import "dart:core" as core;
 
 class Resource extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
 }
 class Folder extends self::Resource {
-  constructor •() → void
+  default constructor •() → void
     : super self::Resource::•()
     ;
 }
diff --git a/pkg/front_end/testcases/inference/infer_method_function_typed.dart.direct.expect b/pkg/front_end/testcases/inference/infer_method_function_typed.dart.direct.expect
index c04e3116206..41e57723828 100644
--- a/pkg/front_end/testcases/inference/infer_method_function_typed.dart.direct.expect
+++ b/pkg/front_end/testcases/inference/infer_method_function_typed.dart.direct.expect
@@ -4,13 +4,13 @@ import "dart:core" as core;
 
 typedef F = () → core::int;
 abstract class A extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
   abstract method x(() → core::int value) → void;
 }
 abstract class B extends self::A {
-  constructor •() → void
+  default constructor •() → void
     : super self::A::•()
     ;
   abstract method x(() → dynamic value) → void;
diff --git a/pkg/front_end/testcases/inference/infer_method_function_typed.dart.outline.expect b/pkg/front_end/testcases/inference/infer_method_function_typed.dart.outline.expect
index 2de2dfdef40..2d3d14827ab 100644
--- a/pkg/front_end/testcases/inference/infer_method_function_typed.dart.outline.expect
+++ b/pkg/front_end/testcases/inference/infer_method_function_typed.dart.outline.expect
@@ -4,12 +4,12 @@ import "dart:core" as core;
 
 typedef F = () → core::int;
 abstract class A extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     ;
   abstract method x(() → core::int value) → void;
 }
 abstract class B extends self::A {
-  constructor •() → void
+  default constructor •() → void
     ;
   abstract method x(() → dynamic value) → void;
 }
diff --git a/pkg/front_end/testcases/inference/infer_method_function_typed.dart.strong.expect b/pkg/front_end/testcases/inference/infer_method_function_typed.dart.strong.expect
index 60088b5270e..ced59ad7115 100644
--- a/pkg/front_end/testcases/inference/infer_method_function_typed.dart.strong.expect
+++ b/pkg/front_end/testcases/inference/infer_method_function_typed.dart.strong.expect
@@ -4,13 +4,13 @@ import "dart:core" as core;
 
 typedef F = () → core::int;
 abstract class A extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
   abstract method x(() → core::int value) → void;
 }
 abstract class B extends self::A {
-  constructor •() → void
+  default constructor •() → void
     : super self::A::•()
     ;
   abstract method x(() → dynamic value) → void;
diff --git a/pkg/front_end/testcases/inference/infer_method_missing_params.dart.direct.expect b/pkg/front_end/testcases/inference/infer_method_missing_params.dart.direct.expect
index 73f17cc6c0e..a7f20a3dd8e 100644
--- a/pkg/front_end/testcases/inference/infer_method_missing_params.dart.direct.expect
+++ b/pkg/front_end/testcases/inference/infer_method_missing_params.dart.direct.expect
@@ -3,7 +3,7 @@ import self as self;
 import "dart:core" as core;
 
 abstract class A extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
   abstract method f(core::int x, core::int y) → core::int;
@@ -11,7 +11,7 @@ abstract class A extends core::Object {
   abstract method h(core::int x, {core::int y = null}) → core::int;
 }
 abstract class B extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
   abstract method f(core::int x) → core::int;
@@ -19,7 +19,7 @@ abstract class B extends core::Object {
   abstract method h(core::int x) → core::int;
 }
 abstract class C extends core::Object implements self::A, self::B {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
   abstract method f(dynamic x, dynamic y) → dynamic;
diff --git a/pkg/front_end/testcases/inference/infer_method_missing_params.dart.outline.expect b/pkg/front_end/testcases/inference/infer_method_missing_params.dart.outline.expect
index 49114696c40..743c14de6c2 100644
--- a/pkg/front_end/testcases/inference/infer_method_missing_params.dart.outline.expect
+++ b/pkg/front_end/testcases/inference/infer_method_missing_params.dart.outline.expect
@@ -3,21 +3,21 @@ import self as self;
 import "dart:core" as core;
 
 abstract class A extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     ;
   abstract method f(core::int x, core::int y) → core::int;
   abstract method g(core::int x, [core::int y]) → core::int;
   abstract method h(core::int x, {core::int y}) → core::int;
 }
 abstract class B extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     ;
   abstract method f(core::int x) → core::int;
   abstract method g(core::int x) → core::int;
   abstract method h(core::int x) → core::int;
 }
 abstract class C extends core::Object implements self::A, self::B {
-  constructor •() → void
+  default constructor •() → void
     ;
   abstract method f(dynamic x, dynamic y) → dynamic;
   abstract method g(dynamic x, [dynamic y]) → dynamic;
diff --git a/pkg/front_end/testcases/inference/infer_method_missing_params.dart.strong.expect b/pkg/front_end/testcases/inference/infer_method_missing_params.dart.strong.expect
index 3bb447c85ce..0eddb832efa 100644
--- a/pkg/front_end/testcases/inference/infer_method_missing_params.dart.strong.expect
+++ b/pkg/front_end/testcases/inference/infer_method_missing_params.dart.strong.expect
@@ -3,7 +3,7 @@ import self as self;
 import "dart:core" as core;
 
 abstract class A extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
   abstract method f(core::int x, core::int y) → core::int;
@@ -11,7 +11,7 @@ abstract class A extends core::Object {
   abstract method h(core::int x, {core::int y = null}) → core::int;
 }
 abstract class B extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
   abstract method f(core::int x) → core::int;
@@ -19,7 +19,7 @@ abstract class B extends core::Object {
   abstract method h(core::int x) → core::int;
 }
 abstract class C extends core::Object implements self::A, self::B {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
   abstract method f(core::int x, dynamic y) → core::int;
diff --git a/pkg/front_end/testcases/inference/infer_parameter_type_setter_from_field.dart.strong.expect b/pkg/front_end/testcases/inference/infer_parameter_type_setter_from_field.dart.strong.expect
index 1ebb79791b7..f26952414f8 100644
--- a/pkg/front_end/testcases/inference/infer_parameter_type_setter_from_field.dart.strong.expect
+++ b/pkg/front_end/testcases/inference/infer_parameter_type_setter_from_field.dart.strong.expect
@@ -3,14 +3,14 @@ import self as self;
 import "dart:core" as core;
 
 class C extends self::D {
-  constructor •() → void
+  default constructor •() → void
     : super self::D::•()
     ;
   set foo(core::int x) → void {}
 }
 class D extends core::Object {
   field core::int foo = null;
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
 }
diff --git a/pkg/front_end/testcases/inference/infer_parameter_type_setter_from_setter.dart.strong.expect b/pkg/front_end/testcases/inference/infer_parameter_type_setter_from_setter.dart.strong.expect
index 3d47596ae5f..783b5f4baa1 100644
--- a/pkg/front_end/testcases/inference/infer_parameter_type_setter_from_setter.dart.strong.expect
+++ b/pkg/front_end/testcases/inference/infer_parameter_type_setter_from_setter.dart.strong.expect
@@ -3,13 +3,13 @@ import self as self;
 import "dart:core" as core;
 
 class C extends self::D {
-  constructor •() → void
+  default constructor •() → void
     : super self::D::•()
     ;
   set foo(core::int x) → void {}
 }
 class D extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
   set foo(core::int x) → void {}
diff --git a/pkg/front_end/testcases/inference/infer_setter_cross_to_getter.dart.direct.expect b/pkg/front_end/testcases/inference/infer_setter_cross_to_getter.dart.direct.expect
index 0da75cd617e..01db96360a9 100644
--- a/pkg/front_end/testcases/inference/infer_setter_cross_to_getter.dart.direct.expect
+++ b/pkg/front_end/testcases/inference/infer_setter_cross_to_getter.dart.direct.expect
@@ -3,13 +3,13 @@ import self as self;
 import "dart:core" as core;
 
 abstract class A extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
   abstract get x() → core::double;
 }
 abstract class B extends self::A {
-  constructor •() → void
+  default constructor •() → void
     : super self::A::•()
     ;
   abstract set x(dynamic value) → void;
diff --git a/pkg/front_end/testcases/inference/infer_setter_cross_to_getter.dart.outline.expect b/pkg/front_end/testcases/inference/infer_setter_cross_to_getter.dart.outline.expect
index 5084c0c5486..b53b06729d6 100644
--- a/pkg/front_end/testcases/inference/infer_setter_cross_to_getter.dart.outline.expect
+++ b/pkg/front_end/testcases/inference/infer_setter_cross_to_getter.dart.outline.expect
@@ -3,12 +3,12 @@ import self as self;
 import "dart:core" as core;
 
 abstract class A extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     ;
   abstract get x() → core::double;
 }
 abstract class B extends self::A {
-  constructor •() → void
+  default constructor •() → void
     ;
   abstract set x(dynamic value) → void;
 }
diff --git a/pkg/front_end/testcases/inference/infer_setter_cross_to_getter.dart.strong.expect b/pkg/front_end/testcases/inference/infer_setter_cross_to_getter.dart.strong.expect
index ce71a72cc09..d086535fe04 100644
--- a/pkg/front_end/testcases/inference/infer_setter_cross_to_getter.dart.strong.expect
+++ b/pkg/front_end/testcases/inference/infer_setter_cross_to_getter.dart.strong.expect
@@ -3,13 +3,13 @@ import self as self;
 import "dart:core" as core;
 
 abstract class A extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
   abstract get x() → core::double;
 }
 abstract class B extends self::A {
-  constructor •() → void
+  default constructor •() → void
     : super self::A::•()
     ;
   abstract set x(core::double value) → void;
diff --git a/pkg/front_end/testcases/inference/infer_setter_from_later_inferred_setter.dart.direct.expect b/pkg/front_end/testcases/inference/infer_setter_from_later_inferred_setter.dart.direct.expect
index b91acff7570..6964352defd 100644
--- a/pkg/front_end/testcases/inference/infer_setter_from_later_inferred_setter.dart.direct.expect
+++ b/pkg/front_end/testcases/inference/infer_setter_from_later_inferred_setter.dart.direct.expect
@@ -3,19 +3,19 @@ import self as self;
 import "dart:core" as core;
 
 class A extends core::Object implements self::B {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
   set x(dynamic value) → void {}
 }
 abstract class B extends core::Object implements self::C {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
   abstract set x(dynamic value) → void;
 }
 abstract class C extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
   abstract set x(core::int value) → void;
diff --git a/pkg/front_end/testcases/inference/infer_setter_from_later_inferred_setter.dart.outline.expect b/pkg/front_end/testcases/inference/infer_setter_from_later_inferred_setter.dart.outline.expect
index 16478917aaa..eb39f737a5f 100644
--- a/pkg/front_end/testcases/inference/infer_setter_from_later_inferred_setter.dart.outline.expect
+++ b/pkg/front_end/testcases/inference/infer_setter_from_later_inferred_setter.dart.outline.expect
@@ -3,18 +3,18 @@ import self as self;
 import "dart:core" as core;
 
 class A extends core::Object implements self::B {
-  constructor •() → void
+  default constructor •() → void
     ;
   set x(dynamic value) → void
     ;
 }
 abstract class B extends core::Object implements self::C {
-  constructor •() → void
+  default constructor •() → void
     ;
   abstract set x(dynamic value) → void;
 }
 abstract class C extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     ;
   abstract set x(core::int value) → void;
 }
diff --git a/pkg/front_end/testcases/inference/infer_setter_from_later_inferred_setter.dart.strong.expect b/pkg/front_end/testcases/inference/infer_setter_from_later_inferred_setter.dart.strong.expect
index bb6ff75ead8..da4503137b7 100644
--- a/pkg/front_end/testcases/inference/infer_setter_from_later_inferred_setter.dart.strong.expect
+++ b/pkg/front_end/testcases/inference/infer_setter_from_later_inferred_setter.dart.strong.expect
@@ -3,19 +3,19 @@ import self as self;
 import "dart:core" as core;
 
 class A extends core::Object implements self::B {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
   set x(core::int value) → void {}
 }
 abstract class B extends core::Object implements self::C {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
   abstract set x(core::int value) → void;
 }
 abstract class C extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
   abstract set x(core::int value) → void;
diff --git a/pkg/front_end/testcases/inference/infer_setter_function_typed.dart.direct.expect b/pkg/front_end/testcases/inference/infer_setter_function_typed.dart.direct.expect
index d6040515329..bd02f2a4192 100644
--- a/pkg/front_end/testcases/inference/infer_setter_function_typed.dart.direct.expect
+++ b/pkg/front_end/testcases/inference/infer_setter_function_typed.dart.direct.expect
@@ -4,13 +4,13 @@ import "dart:core" as core;
 
 typedef F = () → core::int;
 abstract class A extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
   abstract set x(() → core::int value) → void;
 }
 abstract class B extends self::A {
-  constructor •() → void
+  default constructor •() → void
     : super self::A::•()
     ;
   abstract set x(() → dynamic value) → void;
diff --git a/pkg/front_end/testcases/inference/infer_setter_function_typed.dart.outline.expect b/pkg/front_end/testcases/inference/infer_setter_function_typed.dart.outline.expect
index b0b9adb5be1..caa5ecdde8f 100644
--- a/pkg/front_end/testcases/inference/infer_setter_function_typed.dart.outline.expect
+++ b/pkg/front_end/testcases/inference/infer_setter_function_typed.dart.outline.expect
@@ -4,12 +4,12 @@ import "dart:core" as core;
 
 typedef F = () → core::int;
 abstract class A extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     ;
   abstract set x(() → core::int value) → void;
 }
 abstract class B extends self::A {
-  constructor •() → void
+  default constructor •() → void
     ;
   abstract set x(() → dynamic value) → void;
 }
diff --git a/pkg/front_end/testcases/inference/infer_setter_function_typed.dart.strong.expect b/pkg/front_end/testcases/inference/infer_setter_function_typed.dart.strong.expect
index 718f8f84c42..c7d7e89cebe 100644
--- a/pkg/front_end/testcases/inference/infer_setter_function_typed.dart.strong.expect
+++ b/pkg/front_end/testcases/inference/infer_setter_function_typed.dart.strong.expect
@@ -4,13 +4,13 @@ import "dart:core" as core;
 
 typedef F = () → core::int;
 abstract class A extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
   abstract set x(() → core::int value) → void;
 }
 abstract class B extends self::A {
-  constructor •() → void
+  default constructor •() → void
     : super self::A::•()
     ;
   abstract set x(() → dynamic value) → void;
diff --git a/pkg/front_end/testcases/inference/infer_statics_transitively3_a.dart.strong.expect b/pkg/front_end/testcases/inference/infer_statics_transitively3_a.dart.strong.expect
index 0b14dd6faec..e9c14f25847 100644
--- a/pkg/front_end/testcases/inference/infer_statics_transitively3_a.dart.strong.expect
+++ b/pkg/front_end/testcases/inference/infer_statics_transitively3_a.dart.strong.expect
@@ -4,7 +4,7 @@ import "dart:core" as core;
 
 class A extends core::Object {
   static const field dynamic a3 = null;
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
 }
diff --git a/pkg/front_end/testcases/inference/infer_statics_transitively_2_a.dart.strong.expect b/pkg/front_end/testcases/inference/infer_statics_transitively_2_a.dart.strong.expect
index 003b549a040..edcc0e4428d 100644
--- a/pkg/front_end/testcases/inference/infer_statics_transitively_2_a.dart.strong.expect
+++ b/pkg/front_end/testcases/inference/infer_statics_transitively_2_a.dart.strong.expect
@@ -6,7 +6,7 @@ import "./infer_statics_transitively.dart" as test;
 
 class A extends core::Object {
   static final field core::int a2 = inf::b1;
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
 }
diff --git a/pkg/front_end/testcases/inference/infer_statics_transitively_a.dart.strong.expect b/pkg/front_end/testcases/inference/infer_statics_transitively_a.dart.strong.expect
index c576f4d0333..fe4cecf4917 100644
--- a/pkg/front_end/testcases/inference/infer_statics_transitively_a.dart.strong.expect
+++ b/pkg/front_end/testcases/inference/infer_statics_transitively_a.dart.strong.expect
@@ -6,7 +6,7 @@ import "./infer_statics_transitively.dart" as test;
 
 class A extends core::Object {
   static final field core::int a2 = inf::b1;
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
 }
diff --git a/pkg/front_end/testcases/inference/infer_statics_with_method_invocations.dart.strong.expect b/pkg/front_end/testcases/inference/infer_statics_with_method_invocations.dart.strong.expect
index ecc037be176..c67b177ee09 100644
--- a/pkg/front_end/testcases/inference/infer_statics_with_method_invocations.dart.strong.expect
+++ b/pkg/front_end/testcases/inference/infer_statics_with_method_invocations.dart.strong.expect
@@ -5,7 +5,7 @@ import "./infer_statics_with_method_invocations_a.dart" as inf;
 
 class T extends core::Object {
   static final field self::T foo = self::T::m1(self::T::m2(inf::m3("", "")));
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
   static method m1(core::String m) → self::T {
diff --git a/pkg/front_end/testcases/inference/infer_type_on_overridden_fields2.dart.strong.expect b/pkg/front_end/testcases/inference/infer_type_on_overridden_fields2.dart.strong.expect
index 49cf5861984..282cfa7d88a 100644
--- a/pkg/front_end/testcases/inference/infer_type_on_overridden_fields2.dart.strong.expect
+++ b/pkg/front_end/testcases/inference/infer_type_on_overridden_fields2.dart.strong.expect
@@ -4,12 +4,12 @@ import "dart:core" as core;
 
 class A extends core::Object {
   field core::int x = 2;
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
 }
 class B extends self::A {
-  constructor •() → void
+  default constructor •() → void
     : super self::A::•()
     ;
   get x() → core::int
diff --git a/pkg/front_end/testcases/inference/infer_type_on_overridden_fields4.dart.strong.expect b/pkg/front_end/testcases/inference/infer_type_on_overridden_fields4.dart.strong.expect
index 88f4e65c7e0..d2f165f89c9 100644
--- a/pkg/front_end/testcases/inference/infer_type_on_overridden_fields4.dart.strong.expect
+++ b/pkg/front_end/testcases/inference/infer_type_on_overridden_fields4.dart.strong.expect
@@ -4,12 +4,12 @@ import "dart:core" as core;
 
 class A extends core::Object {
   final field core::int x = 2;
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
 }
 class B extends core::Object implements self::A {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
   get x() → core::int
diff --git a/pkg/front_end/testcases/inference/infer_type_on_var_from_field.dart.strong.expect b/pkg/front_end/testcases/inference/infer_type_on_var_from_field.dart.strong.expect
index 542b63b3593..b03ae3a998e 100644
--- a/pkg/front_end/testcases/inference/infer_type_on_var_from_field.dart.strong.expect
+++ b/pkg/front_end/testcases/inference/infer_type_on_var_from_field.dart.strong.expect
@@ -6,7 +6,7 @@ class A extends core::Object {
   field core::int x = 0;
   field core::int y = null;
   final field core::int z = 42;
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
   method test1() → dynamic {
diff --git a/pkg/front_end/testcases/inference/infer_type_regardless_of_declaration_order_or_cycles.dart.strong.expect b/pkg/front_end/testcases/inference/infer_type_regardless_of_declaration_order_or_cycles.dart.strong.expect
index 4a9dd955963..ae6ac13141f 100644
--- a/pkg/front_end/testcases/inference/infer_type_regardless_of_declaration_order_or_cycles.dart.strong.expect
+++ b/pkg/front_end/testcases/inference/infer_type_regardless_of_declaration_order_or_cycles.dart.strong.expect
@@ -4,14 +4,14 @@ import "./infer_type_regardless_of_declaration_order_or_cycles_b.dart" as inf;
 import "dart:core" as core;
 
 class C extends inf::B {
-  constructor •() → void
+  default constructor •() → void
     : super inf::B::•()
     ;
   get x() → core::int
     return null;
 }
 class A extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
   get x() → core::int
diff --git a/pkg/front_end/testcases/inference/infer_type_regardless_of_declaration_order_or_cycles_b.dart.strong.expect b/pkg/front_end/testcases/inference/infer_type_regardless_of_declaration_order_or_cycles_b.dart.strong.expect
index 9f211b6cc97..1c0882057ba 100644
--- a/pkg/front_end/testcases/inference/infer_type_regardless_of_declaration_order_or_cycles_b.dart.strong.expect
+++ b/pkg/front_end/testcases/inference/infer_type_regardless_of_declaration_order_or_cycles_b.dart.strong.expect
@@ -3,7 +3,7 @@ import self as self;
 import "./infer_type_regardless_of_declaration_order_or_cycles.dart" as test;
 
 class B extends test::A {
-  constructor •() → void
+  default constructor •() → void
     : super test::A::•()
     ;
 }
diff --git a/pkg/front_end/testcases/inference/infer_types_on_generic_instantiations_3.dart.strong.expect b/pkg/front_end/testcases/inference/infer_types_on_generic_instantiations_3.dart.strong.expect
index 7b39f1eec3b..4f8e78b3487 100644
--- a/pkg/front_end/testcases/inference/infer_types_on_generic_instantiations_3.dart.strong.expect
+++ b/pkg/front_end/testcases/inference/infer_types_on_generic_instantiations_3.dart.strong.expect
@@ -5,12 +5,12 @@ import "dart:core" as core;
 class A<T extends core::Object> extends core::Object {
   final field self::A::T x = null;
   final field self::A::T w = null;
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
 }
 class B extends core::Object implements self::A<core::int> {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
   get x() → core::int
diff --git a/pkg/front_end/testcases/inference/infer_types_on_generic_instantiations_4.dart.strong.expect b/pkg/front_end/testcases/inference/infer_types_on_generic_instantiations_4.dart.strong.expect
index a5cf0b0d0de..fb2da5de190 100644
--- a/pkg/front_end/testcases/inference/infer_types_on_generic_instantiations_4.dart.strong.expect
+++ b/pkg/front_end/testcases/inference/infer_types_on_generic_instantiations_4.dart.strong.expect
@@ -4,13 +4,13 @@ import "dart:core" as core;
 
 class A<T extends core::Object> extends core::Object {
   field self::A::T x = null;
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
 }
 class B<E extends core::Object> extends self::A<self::B::E> {
   field self::B::E y = null;
-  constructor •() → void
+  default constructor •() → void
     : super self::A::•()
     ;
   get x() → self::B::E
diff --git a/pkg/front_end/testcases/inference/infer_types_on_generic_instantiations_5.dart.strong.expect b/pkg/front_end/testcases/inference/infer_types_on_generic_instantiations_5.dart.strong.expect
index cb9e9e65b1a..fc3a4082d2d 100644
--- a/pkg/front_end/testcases/inference/infer_types_on_generic_instantiations_5.dart.strong.expect
+++ b/pkg/front_end/testcases/inference/infer_types_on_generic_instantiations_5.dart.strong.expect
@@ -3,7 +3,7 @@ import self as self;
 import "dart:core" as core;
 
 abstract class I<E extends core::Object> extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
   abstract method m(dynamic a, (dynamic, self::I::E) → core::String f) → core::String;
@@ -16,7 +16,7 @@ abstract class A<E extends core::Object> extends core::Object implements self::I
 }
 abstract class M extends core::Object {
   final field core::int y = 0;
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
 }
diff --git a/pkg/front_end/testcases/inference/infer_types_on_generic_instantiations_in_library_cycle.dart.strong.expect b/pkg/front_end/testcases/inference/infer_types_on_generic_instantiations_in_library_cycle.dart.strong.expect
index 972b45f165a..6ac796a3f32 100644
--- a/pkg/front_end/testcases/inference/infer_types_on_generic_instantiations_in_library_cycle.dart.strong.expect
+++ b/pkg/front_end/testcases/inference/infer_types_on_generic_instantiations_in_library_cycle.dart.strong.expect
@@ -11,7 +11,7 @@ abstract class A<E extends core::Object> extends core::Object implements inf::I<
 }
 abstract class M extends core::Object {
   final field core::int y = 0;
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
 }
diff --git a/pkg/front_end/testcases/inference/infer_types_on_generic_instantiations_in_library_cycle_a.dart.strong.expect b/pkg/front_end/testcases/inference/infer_types_on_generic_instantiations_in_library_cycle_a.dart.strong.expect
index f695967ef62..8156f082a29 100644
--- a/pkg/front_end/testcases/inference/infer_types_on_generic_instantiations_in_library_cycle_a.dart.strong.expect
+++ b/pkg/front_end/testcases/inference/infer_types_on_generic_instantiations_in_library_cycle_a.dart.strong.expect
@@ -4,7 +4,7 @@ import "dart:core" as core;
 import "./infer_types_on_generic_instantiations_in_library_cycle.dart" as test;
 
 abstract class I<E extends core::Object> extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
   abstract method m(dynamic a, (dynamic, core::int) → core::String f) → test::A<self::I::E>;
diff --git a/pkg/front_end/testcases/inference/infer_types_on_generic_instantiations_infer.dart.strong.expect b/pkg/front_end/testcases/inference/infer_types_on_generic_instantiations_infer.dart.strong.expect
index 1c4a2f41796..66bb424f153 100644
--- a/pkg/front_end/testcases/inference/infer_types_on_generic_instantiations_infer.dart.strong.expect
+++ b/pkg/front_end/testcases/inference/infer_types_on_generic_instantiations_infer.dart.strong.expect
@@ -4,12 +4,12 @@ import "dart:core" as core;
 
 class A<T extends core::Object> extends core::Object {
   final field self::A::T x = null;
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
 }
 class B extends core::Object implements self::A<core::int> {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
   get x() → dynamic
diff --git a/pkg/front_end/testcases/inference/infer_types_on_loop_indices_for_each_loop.dart.strong.expect b/pkg/front_end/testcases/inference/infer_types_on_loop_indices_for_each_loop.dart.strong.expect
index 552a3ddd624..7be08dc075b 100644
--- a/pkg/front_end/testcases/inference/infer_types_on_loop_indices_for_each_loop.dart.strong.expect
+++ b/pkg/front_end/testcases/inference/infer_types_on_loop_indices_for_each_loop.dart.strong.expect
@@ -4,12 +4,12 @@ import "dart:core" as core;
 
 class Foo extends core::Object {
   field core::int bar = 42;
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
 }
 class Bar<T extends core::Iterable<core::String>> extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
   method foo(self::Bar::T t) → void {
@@ -19,7 +19,7 @@ class Bar<T extends core::Iterable<core::String>> extends core::Object {
   }
 }
 class Baz<T extends core::Object, E extends core::Iterable<self::Baz::T>, S extends self::Baz::E> extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
   method foo(self::Baz::S t) → void {
diff --git a/pkg/front_end/testcases/inference/inferred_nonstatic_field_depends_on_static_field_complex.dart.strong.expect b/pkg/front_end/testcases/inference/inferred_nonstatic_field_depends_on_static_field_complex.dart.strong.expect
index 65dcc691591..1d5d8c7cb5f 100644
--- a/pkg/front_end/testcases/inference/inferred_nonstatic_field_depends_on_static_field_complex.dart.strong.expect
+++ b/pkg/front_end/testcases/inference/inferred_nonstatic_field_depends_on_static_field_complex.dart.strong.expect
@@ -5,7 +5,7 @@ import "dart:core" as core;
 class C extends core::Object {
   static field core::String x = "x";
   field core::Map<core::String, core::Map<core::String, core::String>> y = <core::String, core::Map<core::String, core::String>>{"a": <core::String, core::String>{"b": "c"}, "d": <core::String, core::String>{"e": self::C::x}};
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
 }
diff --git a/pkg/front_end/testcases/inference/inferred_nonstatic_field_depends_on_top_level_var_simple.dart.strong.expect b/pkg/front_end/testcases/inference/inferred_nonstatic_field_depends_on_top_level_var_simple.dart.strong.expect
index 3765ab87c39..0d333562f4e 100644
--- a/pkg/front_end/testcases/inference/inferred_nonstatic_field_depends_on_top_level_var_simple.dart.strong.expect
+++ b/pkg/front_end/testcases/inference/inferred_nonstatic_field_depends_on_top_level_var_simple.dart.strong.expect
@@ -4,7 +4,7 @@ import "dart:core" as core;
 
 class C extends core::Object {
   field core::String y = self::x;
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
 }
diff --git a/pkg/front_end/testcases/inference/inferred_type_cascade.dart.strong.expect b/pkg/front_end/testcases/inference/inferred_type_cascade.dart.strong.expect
index c4e65268e94..23b7e39900a 100644
--- a/pkg/front_end/testcases/inference/inferred_type_cascade.dart.strong.expect
+++ b/pkg/front_end/testcases/inference/inferred_type_cascade.dart.strong.expect
@@ -5,7 +5,7 @@ import "dart:core" as core;
 class A extends core::Object {
   field core::int a = null;
   field core::List<core::int> b = null;
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
   method m() → void {}
diff --git a/pkg/front_end/testcases/inference/inferred_type_custom_binary_op.dart.strong.expect b/pkg/front_end/testcases/inference/inferred_type_custom_binary_op.dart.strong.expect
index 64fe5bbe2eb..fc8362fd7b7 100644
--- a/pkg/front_end/testcases/inference/inferred_type_custom_binary_op.dart.strong.expect
+++ b/pkg/front_end/testcases/inference/inferred_type_custom_binary_op.dart.strong.expect
@@ -3,7 +3,7 @@ import self as self;
 import "dart:core" as core;
 
 class C extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
   operator *(self::C other) → core::bool
diff --git a/pkg/front_end/testcases/inference/inferred_type_custom_binary_op_via_interface.dart.strong.expect b/pkg/front_end/testcases/inference/inferred_type_custom_binary_op_via_interface.dart.strong.expect
index a6f7e415b8d..28cf82518bd 100644
--- a/pkg/front_end/testcases/inference/inferred_type_custom_binary_op_via_interface.dart.strong.expect
+++ b/pkg/front_end/testcases/inference/inferred_type_custom_binary_op_via_interface.dart.strong.expect
@@ -3,14 +3,14 @@ import self as self;
 import "dart:core" as core;
 
 class I extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
   operator *(self::C other) → core::bool
     return true;
 }
 abstract class C extends core::Object implements self::I {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
 }
diff --git a/pkg/front_end/testcases/inference/inferred_type_custom_index_op.dart.strong.expect b/pkg/front_end/testcases/inference/inferred_type_custom_index_op.dart.strong.expect
index a9c902361c5..81713384b24 100644
--- a/pkg/front_end/testcases/inference/inferred_type_custom_index_op.dart.strong.expect
+++ b/pkg/front_end/testcases/inference/inferred_type_custom_index_op.dart.strong.expect
@@ -3,7 +3,7 @@ import self as self;
 import "dart:core" as core;
 
 class C extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
   operator [](core::int index) → core::bool
diff --git a/pkg/front_end/testcases/inference/inferred_type_custom_index_op_via_interface.dart.strong.expect b/pkg/front_end/testcases/inference/inferred_type_custom_index_op_via_interface.dart.strong.expect
index aa347c8a217..2cfaf80e6de 100644
--- a/pkg/front_end/testcases/inference/inferred_type_custom_index_op_via_interface.dart.strong.expect
+++ b/pkg/front_end/testcases/inference/inferred_type_custom_index_op_via_interface.dart.strong.expect
@@ -3,14 +3,14 @@ import self as self;
 import "dart:core" as core;
 
 class I extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
   operator [](core::int index) → core::bool
     return true;
 }
 abstract class C extends core::Object implements self::I {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
 }
diff --git a/pkg/front_end/testcases/inference/inferred_type_custom_unary_op.dart.strong.expect b/pkg/front_end/testcases/inference/inferred_type_custom_unary_op.dart.strong.expect
index 202f2f36bfa..56ee9476fe7 100644
--- a/pkg/front_end/testcases/inference/inferred_type_custom_unary_op.dart.strong.expect
+++ b/pkg/front_end/testcases/inference/inferred_type_custom_unary_op.dart.strong.expect
@@ -3,7 +3,7 @@ import self as self;
 import "dart:core" as core;
 
 class C extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
   operator unary-() → core::bool
diff --git a/pkg/front_end/testcases/inference/inferred_type_custom_unary_op_via_interface.dart.strong.expect b/pkg/front_end/testcases/inference/inferred_type_custom_unary_op_via_interface.dart.strong.expect
index a00a9546ded..9a5a9610740 100644
--- a/pkg/front_end/testcases/inference/inferred_type_custom_unary_op_via_interface.dart.strong.expect
+++ b/pkg/front_end/testcases/inference/inferred_type_custom_unary_op_via_interface.dart.strong.expect
@@ -3,14 +3,14 @@ import self as self;
 import "dart:core" as core;
 
 class I extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
   operator unary-() → core::bool
     return true;
 }
 abstract class C extends core::Object implements self::I {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
 }
diff --git a/pkg/front_end/testcases/inference/inferred_type_extract_method_tear_off.dart.strong.expect b/pkg/front_end/testcases/inference/inferred_type_extract_method_tear_off.dart.strong.expect
index 2f9542cb96c..db47da772b6 100644
--- a/pkg/front_end/testcases/inference/inferred_type_extract_method_tear_off.dart.strong.expect
+++ b/pkg/front_end/testcases/inference/inferred_type_extract_method_tear_off.dart.strong.expect
@@ -3,7 +3,7 @@ import self as self;
 import "dart:core" as core;
 
 class C extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
   method g() → core::bool
diff --git a/pkg/front_end/testcases/inference/inferred_type_extract_method_tear_off_via_interface.dart.strong.expect b/pkg/front_end/testcases/inference/inferred_type_extract_method_tear_off_via_interface.dart.strong.expect
index f8932fe0d61..6bb22f53fe6 100644
--- a/pkg/front_end/testcases/inference/inferred_type_extract_method_tear_off_via_interface.dart.strong.expect
+++ b/pkg/front_end/testcases/inference/inferred_type_extract_method_tear_off_via_interface.dart.strong.expect
@@ -3,14 +3,14 @@ import self as self;
 import "dart:core" as core;
 
 class I extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
   method g() → core::bool
     return true;
 }
 abstract class C extends core::Object implements self::I {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
 }
diff --git a/pkg/front_end/testcases/inference/inferred_type_invoke_method.dart.strong.expect b/pkg/front_end/testcases/inference/inferred_type_invoke_method.dart.strong.expect
index e1a3429071b..b1d16c9155f 100644
--- a/pkg/front_end/testcases/inference/inferred_type_invoke_method.dart.strong.expect
+++ b/pkg/front_end/testcases/inference/inferred_type_invoke_method.dart.strong.expect
@@ -3,7 +3,7 @@ import self as self;
 import "dart:core" as core;
 
 class C extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
   method g() → core::bool
diff --git a/pkg/front_end/testcases/inference/inferred_type_invoke_method_via_interface.dart.strong.expect b/pkg/front_end/testcases/inference/inferred_type_invoke_method_via_interface.dart.strong.expect
index 31e9fe838e3..045e829bb83 100644
--- a/pkg/front_end/testcases/inference/inferred_type_invoke_method_via_interface.dart.strong.expect
+++ b/pkg/front_end/testcases/inference/inferred_type_invoke_method_via_interface.dart.strong.expect
@@ -3,14 +3,14 @@ import self as self;
 import "dart:core" as core;
 
 class I extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
   method g() → core::bool
     return true;
 }
 abstract class C extends core::Object implements self::I {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
 }
diff --git a/pkg/front_end/testcases/inference/inferred_type_via_closure_multiple_levels_of_nesting.dart.strong.expect b/pkg/front_end/testcases/inference/inferred_type_via_closure_multiple_levels_of_nesting.dart.strong.expect
index db7c2123f65..62e4707918d 100644
--- a/pkg/front_end/testcases/inference/inferred_type_via_closure_multiple_levels_of_nesting.dart.strong.expect
+++ b/pkg/front_end/testcases/inference/inferred_type_via_closure_multiple_levels_of_nesting.dart.strong.expect
@@ -4,7 +4,7 @@ import "dart:core" as core;
 
 class C extends core::Object {
   static final field (core::bool) → (core::int) → core::Map<core::int, core::bool> f = (core::bool b) → (core::int) → core::Map<core::int, core::bool> => (core::int i) → core::Map<core::int, core::bool> => <core::int, core::bool>{i: b};
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
 }
diff --git a/pkg/front_end/testcases/inference/inferred_type_via_closure_type_depends_on_args.dart.strong.expect b/pkg/front_end/testcases/inference/inferred_type_via_closure_type_depends_on_args.dart.strong.expect
index db206c23410..1638192ca17 100644
--- a/pkg/front_end/testcases/inference/inferred_type_via_closure_type_depends_on_args.dart.strong.expect
+++ b/pkg/front_end/testcases/inference/inferred_type_via_closure_type_depends_on_args.dart.strong.expect
@@ -4,7 +4,7 @@ import "dart:core" as core;
 
 class C extends core::Object {
   static final field (core::bool) → core::bool f = (core::bool b) → core::bool => b;
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
 }
diff --git a/pkg/front_end/testcases/inference/inferred_type_via_closure_type_independent_of_args_field.dart.strong.expect b/pkg/front_end/testcases/inference/inferred_type_via_closure_type_independent_of_args_field.dart.strong.expect
index 13f427c6632..b4531b45611 100644
--- a/pkg/front_end/testcases/inference/inferred_type_via_closure_type_independent_of_args_field.dart.strong.expect
+++ b/pkg/front_end/testcases/inference/inferred_type_via_closure_type_independent_of_args_field.dart.strong.expect
@@ -4,7 +4,7 @@ import "dart:core" as core;
 
 class C extends core::Object {
   static final field (core::bool) → core::int f = (core::bool b) → core::int => 1;
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
 }
diff --git a/pkg/front_end/testcases/inference/instance_creation_downwards.dart.direct.expect b/pkg/front_end/testcases/inference/instance_creation_downwards.dart.direct.expect
index 3e4d4f72640..5adb383063a 100644
--- a/pkg/front_end/testcases/inference/instance_creation_downwards.dart.direct.expect
+++ b/pkg/front_end/testcases/inference/instance_creation_downwards.dart.direct.expect
@@ -8,7 +8,7 @@ class A<T extends core::Object> extends core::Object {
     ;
 }
 class B<T extends core::Object> extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
 }
diff --git a/pkg/front_end/testcases/inference/instance_creation_downwards.dart.outline.expect b/pkg/front_end/testcases/inference/instance_creation_downwards.dart.outline.expect
index aa9fb9489bc..a17f0c2d167 100644
--- a/pkg/front_end/testcases/inference/instance_creation_downwards.dart.outline.expect
+++ b/pkg/front_end/testcases/inference/instance_creation_downwards.dart.outline.expect
@@ -7,7 +7,7 @@ class A<T extends core::Object> extends core::Object {
     ;
 }
 class B<T extends core::Object> extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     ;
 }
 static method main() → dynamic
diff --git a/pkg/front_end/testcases/inference/instance_creation_downwards.dart.strong.expect b/pkg/front_end/testcases/inference/instance_creation_downwards.dart.strong.expect
index 0d8d78f07b4..bdd35e6f75a 100644
--- a/pkg/front_end/testcases/inference/instance_creation_downwards.dart.strong.expect
+++ b/pkg/front_end/testcases/inference/instance_creation_downwards.dart.strong.expect
@@ -8,7 +8,7 @@ class A<T extends core::Object> extends core::Object {
     ;
 }
 class B<T extends core::Object> extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
 }
diff --git a/pkg/front_end/testcases/inference/instantiate_to_bounds_generic2_has_bound_defined_after.dart.strong.expect b/pkg/front_end/testcases/inference/instantiate_to_bounds_generic2_has_bound_defined_after.dart.strong.expect
index 32b2ed4b298..58bf32f8a88 100644
--- a/pkg/front_end/testcases/inference/instantiate_to_bounds_generic2_has_bound_defined_after.dart.strong.expect
+++ b/pkg/front_end/testcases/inference/instantiate_to_bounds_generic2_has_bound_defined_after.dart.strong.expect
@@ -3,12 +3,12 @@ import self as self;
 import "dart:core" as core;
 
 class B<T extends self::A<dynamic>> extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
 }
 class A<T extends core::int> extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
 }
diff --git a/pkg/front_end/testcases/inference/instantiate_to_bounds_generic2_has_bound_defined_before.dart.strong.expect b/pkg/front_end/testcases/inference/instantiate_to_bounds_generic2_has_bound_defined_before.dart.strong.expect
index 8453e04968d..a12429371ff 100644
--- a/pkg/front_end/testcases/inference/instantiate_to_bounds_generic2_has_bound_defined_before.dart.strong.expect
+++ b/pkg/front_end/testcases/inference/instantiate_to_bounds_generic2_has_bound_defined_before.dart.strong.expect
@@ -3,12 +3,12 @@ import self as self;
 import "dart:core" as core;
 
 class A<T extends core::int> extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
 }
 class B<T extends self::A<dynamic>> extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
 }
diff --git a/pkg/front_end/testcases/inference/instantiate_to_bounds_generic2_no_bound.dart.strong.expect b/pkg/front_end/testcases/inference/instantiate_to_bounds_generic2_no_bound.dart.strong.expect
index aaa199e0158..6be8e0bd13a 100644
--- a/pkg/front_end/testcases/inference/instantiate_to_bounds_generic2_no_bound.dart.strong.expect
+++ b/pkg/front_end/testcases/inference/instantiate_to_bounds_generic2_no_bound.dart.strong.expect
@@ -3,12 +3,12 @@ import self as self;
 import "dart:core" as core;
 
 class A<T extends core::Object> extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
 }
 class B<T extends self::A<dynamic>> extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
 }
diff --git a/pkg/front_end/testcases/inference/instantiate_to_bounds_generic_has_bound_defined_after.dart.strong.expect b/pkg/front_end/testcases/inference/instantiate_to_bounds_generic_has_bound_defined_after.dart.strong.expect
index 3b80074dafc..47705208816 100644
--- a/pkg/front_end/testcases/inference/instantiate_to_bounds_generic_has_bound_defined_after.dart.strong.expect
+++ b/pkg/front_end/testcases/inference/instantiate_to_bounds_generic_has_bound_defined_after.dart.strong.expect
@@ -3,7 +3,7 @@ import self as self;
 import "dart:core" as core;
 
 class A<T extends core::int> extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
 }
diff --git a/pkg/front_end/testcases/inference/instantiate_to_bounds_generic_has_bound_defined_before.dart.strong.expect b/pkg/front_end/testcases/inference/instantiate_to_bounds_generic_has_bound_defined_before.dart.strong.expect
index 3b80074dafc..47705208816 100644
--- a/pkg/front_end/testcases/inference/instantiate_to_bounds_generic_has_bound_defined_before.dart.strong.expect
+++ b/pkg/front_end/testcases/inference/instantiate_to_bounds_generic_has_bound_defined_before.dart.strong.expect
@@ -3,7 +3,7 @@ import self as self;
 import "dart:core" as core;
 
 class A<T extends core::int> extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
 }
diff --git a/pkg/front_end/testcases/inference/instantiate_to_bounds_invoke_constructor_no_bound.dart.strong.expect b/pkg/front_end/testcases/inference/instantiate_to_bounds_invoke_constructor_no_bound.dart.strong.expect
index 6a21f2ae8b2..977dc7851af 100644
--- a/pkg/front_end/testcases/inference/instantiate_to_bounds_invoke_constructor_no_bound.dart.strong.expect
+++ b/pkg/front_end/testcases/inference/instantiate_to_bounds_invoke_constructor_no_bound.dart.strong.expect
@@ -3,7 +3,7 @@ import self as self;
 import "dart:core" as core;
 
 class C<T extends core::Object> extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
 }
diff --git a/pkg/front_end/testcases/inference/instantiate_to_bounds_invoke_constructor_type_args_exact.dart.strong.expect b/pkg/front_end/testcases/inference/instantiate_to_bounds_invoke_constructor_type_args_exact.dart.strong.expect
index 722c0b4da52..4ffc25f7603 100644
--- a/pkg/front_end/testcases/inference/instantiate_to_bounds_invoke_constructor_type_args_exact.dart.strong.expect
+++ b/pkg/front_end/testcases/inference/instantiate_to_bounds_invoke_constructor_type_args_exact.dart.strong.expect
@@ -3,7 +3,7 @@ import self as self;
 import "dart:core" as core;
 
 class C<T extends core::num> extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
 }
diff --git a/pkg/front_end/testcases/inference/instantiate_to_bounds_not_generic.dart.strong.expect b/pkg/front_end/testcases/inference/instantiate_to_bounds_not_generic.dart.strong.expect
index 8dc58b69813..a82a67e8909 100644
--- a/pkg/front_end/testcases/inference/instantiate_to_bounds_not_generic.dart.strong.expect
+++ b/pkg/front_end/testcases/inference/instantiate_to_bounds_not_generic.dart.strong.expect
@@ -3,12 +3,12 @@ import self as self;
 import "dart:core" as core;
 
 class A extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
 }
 class B<T extends self::A> extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
 }
diff --git a/pkg/front_end/testcases/inference/method_call_with_type_arguments_instance_method.dart.strong.expect b/pkg/front_end/testcases/inference/method_call_with_type_arguments_instance_method.dart.strong.expect
index aafb666a703..400327eecab 100644
--- a/pkg/front_end/testcases/inference/method_call_with_type_arguments_instance_method.dart.strong.expect
+++ b/pkg/front_end/testcases/inference/method_call_with_type_arguments_instance_method.dart.strong.expect
@@ -3,14 +3,14 @@ import self as self;
 import "dart:core" as core;
 
 class C extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
   method f<T extends core::Object>() → self::D<self::C::f::T>
     return null;
 }
 class D<T extends core::Object> extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
 }
diff --git a/pkg/front_end/testcases/inference/method_call_with_type_arguments_instance_method_identifier_sequence.dart.strong.expect b/pkg/front_end/testcases/inference/method_call_with_type_arguments_instance_method_identifier_sequence.dart.strong.expect
index ebcaa7dc2ff..5ee63b7dfd8 100644
--- a/pkg/front_end/testcases/inference/method_call_with_type_arguments_instance_method_identifier_sequence.dart.strong.expect
+++ b/pkg/front_end/testcases/inference/method_call_with_type_arguments_instance_method_identifier_sequence.dart.strong.expect
@@ -3,14 +3,14 @@ import self as self;
 import "dart:core" as core;
 
 class C extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
   method f<T extends core::Object>() → self::D<self::C::f::T>
     return null;
 }
 class D<T extends core::Object> extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
 }
diff --git a/pkg/front_end/testcases/inference/method_call_with_type_arguments_static_method.dart.strong.expect b/pkg/front_end/testcases/inference/method_call_with_type_arguments_static_method.dart.strong.expect
index 793bd2a3588..36256c8e9f0 100644
--- a/pkg/front_end/testcases/inference/method_call_with_type_arguments_static_method.dart.strong.expect
+++ b/pkg/front_end/testcases/inference/method_call_with_type_arguments_static_method.dart.strong.expect
@@ -3,14 +3,14 @@ import self as self;
 import "dart:core" as core;
 
 class C extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
   static method f<T extends core::Object>() → self::D<self::C::f::T>
     return null;
 }
 class D<T extends core::Object> extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
 }
diff --git a/pkg/front_end/testcases/inference/method_call_with_type_arguments_top_level_function.dart.strong.expect b/pkg/front_end/testcases/inference/method_call_with_type_arguments_top_level_function.dart.strong.expect
index 84f00752139..07348e01cd0 100644
--- a/pkg/front_end/testcases/inference/method_call_with_type_arguments_top_level_function.dart.strong.expect
+++ b/pkg/front_end/testcases/inference/method_call_with_type_arguments_top_level_function.dart.strong.expect
@@ -3,7 +3,7 @@ import self as self;
 import "dart:core" as core;
 
 class D<T extends core::Object> extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
 }
diff --git a/pkg/front_end/testcases/inference/non_inferrable_getter_setter.dart.direct.expect b/pkg/front_end/testcases/inference/non_inferrable_getter_setter.dart.direct.expect
index 4d7ac20b338..2f4d41c0fb4 100644
--- a/pkg/front_end/testcases/inference/non_inferrable_getter_setter.dart.direct.expect
+++ b/pkg/front_end/testcases/inference/non_inferrable_getter_setter.dart.direct.expect
@@ -3,7 +3,7 @@ import self as self;
 import "dart:core" as core;
 
 class C extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
   get x() → dynamic
diff --git a/pkg/front_end/testcases/inference/non_inferrable_getter_setter.dart.outline.expect b/pkg/front_end/testcases/inference/non_inferrable_getter_setter.dart.outline.expect
index 4ab42f137ea..26550892d77 100644
--- a/pkg/front_end/testcases/inference/non_inferrable_getter_setter.dart.outline.expect
+++ b/pkg/front_end/testcases/inference/non_inferrable_getter_setter.dart.outline.expect
@@ -3,7 +3,7 @@ import self as self;
 import "dart:core" as core;
 
 class C extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     ;
   get x() → dynamic
     ;
diff --git a/pkg/front_end/testcases/inference/non_inferrable_getter_setter.dart.strong.expect b/pkg/front_end/testcases/inference/non_inferrable_getter_setter.dart.strong.expect
index 4d7ac20b338..2f4d41c0fb4 100644
--- a/pkg/front_end/testcases/inference/non_inferrable_getter_setter.dart.strong.expect
+++ b/pkg/front_end/testcases/inference/non_inferrable_getter_setter.dart.strong.expect
@@ -3,7 +3,7 @@ import self as self;
 import "dart:core" as core;
 
 class C extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
   get x() → dynamic
diff --git a/pkg/front_end/testcases/inference/null_aware_method_invocation.dart.direct.expect b/pkg/front_end/testcases/inference/null_aware_method_invocation.dart.direct.expect
index 2e31834f94d..7e6739d8d3f 100644
--- a/pkg/front_end/testcases/inference/null_aware_method_invocation.dart.direct.expect
+++ b/pkg/front_end/testcases/inference/null_aware_method_invocation.dart.direct.expect
@@ -3,7 +3,7 @@ import self as self;
 import "dart:core" as core;
 
 class C extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
   method f() → core::int
diff --git a/pkg/front_end/testcases/inference/null_aware_method_invocation.dart.outline.expect b/pkg/front_end/testcases/inference/null_aware_method_invocation.dart.outline.expect
index f6c1f6a731a..8392dca9301 100644
--- a/pkg/front_end/testcases/inference/null_aware_method_invocation.dart.outline.expect
+++ b/pkg/front_end/testcases/inference/null_aware_method_invocation.dart.outline.expect
@@ -3,7 +3,7 @@ import self as self;
 import "dart:core" as core;
 
 class C extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     ;
   method f() → core::int
     ;
diff --git a/pkg/front_end/testcases/inference/null_aware_method_invocation.dart.strong.expect b/pkg/front_end/testcases/inference/null_aware_method_invocation.dart.strong.expect
index ec43510f2a1..7db057afac0 100644
--- a/pkg/front_end/testcases/inference/null_aware_method_invocation.dart.strong.expect
+++ b/pkg/front_end/testcases/inference/null_aware_method_invocation.dart.strong.expect
@@ -3,7 +3,7 @@ import self as self;
 import "dart:core" as core;
 
 class C extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
   method f() → core::int
diff --git a/pkg/front_end/testcases/inference/null_aware_property_get.dart.direct.expect b/pkg/front_end/testcases/inference/null_aware_property_get.dart.direct.expect
index 99bbffd8976..78a95f166d4 100644
--- a/pkg/front_end/testcases/inference/null_aware_property_get.dart.direct.expect
+++ b/pkg/front_end/testcases/inference/null_aware_property_get.dart.direct.expect
@@ -4,7 +4,7 @@ import "dart:core" as core;
 
 class C extends core::Object {
   field core::int x = null;
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
 }
diff --git a/pkg/front_end/testcases/inference/null_aware_property_get.dart.outline.expect b/pkg/front_end/testcases/inference/null_aware_property_get.dart.outline.expect
index 24136b11125..f0f825a0f9e 100644
--- a/pkg/front_end/testcases/inference/null_aware_property_get.dart.outline.expect
+++ b/pkg/front_end/testcases/inference/null_aware_property_get.dart.outline.expect
@@ -4,7 +4,7 @@ import "dart:core" as core;
 
 class C extends core::Object {
   field core::int x;
-  constructor •() → void
+  default constructor •() → void
     ;
 }
 static method f(self::C c) → void
diff --git a/pkg/front_end/testcases/inference/null_aware_property_get.dart.strong.expect b/pkg/front_end/testcases/inference/null_aware_property_get.dart.strong.expect
index 3d84f9ca84a..14ca21c5ee6 100644
--- a/pkg/front_end/testcases/inference/null_aware_property_get.dart.strong.expect
+++ b/pkg/front_end/testcases/inference/null_aware_property_get.dart.strong.expect
@@ -4,7 +4,7 @@ import "dart:core" as core;
 
 class C extends core::Object {
   field core::int x = null;
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
 }
diff --git a/pkg/front_end/testcases/inference/propagate_inference_to_field_in_class.dart.strong.expect b/pkg/front_end/testcases/inference/propagate_inference_to_field_in_class.dart.strong.expect
index 2ffa41cad7c..d8d5b0a0644 100644
--- a/pkg/front_end/testcases/inference/propagate_inference_to_field_in_class.dart.strong.expect
+++ b/pkg/front_end/testcases/inference/propagate_inference_to_field_in_class.dart.strong.expect
@@ -4,7 +4,7 @@ import "dart:core" as core;
 
 class A extends core::Object {
   field core::int x = 2;
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
 }
diff --git a/pkg/front_end/testcases/inference/propagate_inference_to_field_in_class_dynamic_warnings.dart.strong.expect b/pkg/front_end/testcases/inference/propagate_inference_to_field_in_class_dynamic_warnings.dart.strong.expect
index 53dc4a9636d..bfb34d5eac5 100644
--- a/pkg/front_end/testcases/inference/propagate_inference_to_field_in_class_dynamic_warnings.dart.strong.expect
+++ b/pkg/front_end/testcases/inference/propagate_inference_to_field_in_class_dynamic_warnings.dart.strong.expect
@@ -4,7 +4,7 @@ import "dart:core" as core;
 
 class A extends core::Object {
   field core::int x = 2;
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
 }
diff --git a/pkg/front_end/testcases/inference/propagate_inference_transitively.dart.strong.expect b/pkg/front_end/testcases/inference/propagate_inference_transitively.dart.strong.expect
index d5b44be3dda..187e6263c84 100644
--- a/pkg/front_end/testcases/inference/propagate_inference_transitively.dart.strong.expect
+++ b/pkg/front_end/testcases/inference/propagate_inference_transitively.dart.strong.expect
@@ -4,7 +4,7 @@ import "dart:core" as core;
 
 class A extends core::Object {
   field core::int x = 2;
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
 }
diff --git a/pkg/front_end/testcases/inference/propagate_inference_transitively2.dart.strong.expect b/pkg/front_end/testcases/inference/propagate_inference_transitively2.dart.strong.expect
index 07497951016..4b1d52e218d 100644
--- a/pkg/front_end/testcases/inference/propagate_inference_transitively2.dart.strong.expect
+++ b/pkg/front_end/testcases/inference/propagate_inference_transitively2.dart.strong.expect
@@ -4,25 +4,25 @@ import "dart:core" as core;
 
 class A extends core::Object {
   field core::int x = 42;
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
 }
 class B extends core::Object {
   field self::A a = new self::A::•();
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
 }
 class C extends core::Object {
   field self::B b = new self::B::•();
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
 }
 class D extends core::Object {
   field self::C c = new self::C::•();
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
 }
diff --git a/pkg/front_end/testcases/inference/property_get_toplevel.dart.direct.expect b/pkg/front_end/testcases/inference/property_get_toplevel.dart.direct.expect
index a383f81d77c..430414d9217 100644
--- a/pkg/front_end/testcases/inference/property_get_toplevel.dart.direct.expect
+++ b/pkg/front_end/testcases/inference/property_get_toplevel.dart.direct.expect
@@ -4,7 +4,7 @@ import "dart:core" as core;
 
 class C extends core::Object {
   field core::int field = 0;
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
   get getter() → core::int
diff --git a/pkg/front_end/testcases/inference/property_get_toplevel.dart.outline.expect b/pkg/front_end/testcases/inference/property_get_toplevel.dart.outline.expect
index 87e635a49d1..fcb3dc09b06 100644
--- a/pkg/front_end/testcases/inference/property_get_toplevel.dart.outline.expect
+++ b/pkg/front_end/testcases/inference/property_get_toplevel.dart.outline.expect
@@ -4,7 +4,7 @@ import "dart:core" as core;
 
 class C extends core::Object {
   field core::int field;
-  constructor •() → void
+  default constructor •() → void
     ;
   get getter() → core::int
     ;
diff --git a/pkg/front_end/testcases/inference/property_get_toplevel.dart.strong.expect b/pkg/front_end/testcases/inference/property_get_toplevel.dart.strong.expect
index 35e43770483..4778d0f7342 100644
--- a/pkg/front_end/testcases/inference/property_get_toplevel.dart.strong.expect
+++ b/pkg/front_end/testcases/inference/property_get_toplevel.dart.strong.expect
@@ -4,7 +4,7 @@ import "dart:core" as core;
 
 class C extends core::Object {
   field core::int field = 0;
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
   get getter() → core::int
diff --git a/pkg/front_end/testcases/inference/property_set.dart.direct.expect b/pkg/front_end/testcases/inference/property_set.dart.direct.expect
index b4a388f64a6..9e7507973be 100644
--- a/pkg/front_end/testcases/inference/property_set.dart.direct.expect
+++ b/pkg/front_end/testcases/inference/property_set.dart.direct.expect
@@ -4,7 +4,7 @@ import "dart:core" as core;
 
 class A<T extends core::Object> extends core::Object {
   field core::List<self::A::T> x = null;
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
   set y(core::List<self::A::T> value) → void {}
diff --git a/pkg/front_end/testcases/inference/property_set.dart.outline.expect b/pkg/front_end/testcases/inference/property_set.dart.outline.expect
index a72885144c2..5be66fd5522 100644
--- a/pkg/front_end/testcases/inference/property_set.dart.outline.expect
+++ b/pkg/front_end/testcases/inference/property_set.dart.outline.expect
@@ -4,7 +4,7 @@ import "dart:core" as core;
 
 class A<T extends core::Object> extends core::Object {
   field core::List<self::A::T> x;
-  constructor •() → void
+  default constructor •() → void
     ;
   set y(core::List<self::A::T> value) → void
     ;
diff --git a/pkg/front_end/testcases/inference/property_set.dart.strong.expect b/pkg/front_end/testcases/inference/property_set.dart.strong.expect
index 4fb88c0b6b7..7d2c629be06 100644
--- a/pkg/front_end/testcases/inference/property_set.dart.strong.expect
+++ b/pkg/front_end/testcases/inference/property_set.dart.strong.expect
@@ -4,7 +4,7 @@ import "dart:core" as core;
 
 class A<T extends core::Object> extends core::Object {
   field core::List<self::A::T> x = null;
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
   set y(core::List<self::A::T> value) → void {}
diff --git a/pkg/front_end/testcases/inference/property_set_bad_setter.dart.direct.expect b/pkg/front_end/testcases/inference/property_set_bad_setter.dart.direct.expect
index 910be1f627f..6d105c2446e 100644
--- a/pkg/front_end/testcases/inference/property_set_bad_setter.dart.direct.expect
+++ b/pkg/front_end/testcases/inference/property_set_bad_setter.dart.direct.expect
@@ -3,7 +3,7 @@ import self as self;
 import "dart:core" as core;
 
 class A extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
   set x() → void {}
diff --git a/pkg/front_end/testcases/inference/property_set_bad_setter.dart.outline.expect b/pkg/front_end/testcases/inference/property_set_bad_setter.dart.outline.expect
index b20f4fc0748..c595c2ec4bd 100644
--- a/pkg/front_end/testcases/inference/property_set_bad_setter.dart.outline.expect
+++ b/pkg/front_end/testcases/inference/property_set_bad_setter.dart.outline.expect
@@ -3,7 +3,7 @@ import self as self;
 import "dart:core" as core;
 
 class A extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     ;
   set x() → void
     ;
diff --git a/pkg/front_end/testcases/inference/property_set_bad_setter.dart.strong.expect b/pkg/front_end/testcases/inference/property_set_bad_setter.dart.strong.expect
index 29476ce2487..b3aef065650 100644
--- a/pkg/front_end/testcases/inference/property_set_bad_setter.dart.strong.expect
+++ b/pkg/front_end/testcases/inference/property_set_bad_setter.dart.strong.expect
@@ -3,7 +3,7 @@ import self as self;
 import "dart:core" as core;
 
 class A extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
   set x() → void {}
diff --git a/pkg/front_end/testcases/inference/refine_binary_expression_type_type_parameter_t_double.dart.strong.expect b/pkg/front_end/testcases/inference/refine_binary_expression_type_type_parameter_t_double.dart.strong.expect
index 09d32125e63..3088c2b98fa 100644
--- a/pkg/front_end/testcases/inference/refine_binary_expression_type_type_parameter_t_double.dart.strong.expect
+++ b/pkg/front_end/testcases/inference/refine_binary_expression_type_type_parameter_t_double.dart.strong.expect
@@ -4,7 +4,7 @@ import "dart:core" as core;
 
 class C<T extends core::num> extends core::Object {
   field self::C::T a = null;
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
   method op(core::double b) → void {
diff --git a/pkg/front_end/testcases/inference/refine_binary_expression_type_type_parameter_t_int.dart.strong.expect b/pkg/front_end/testcases/inference/refine_binary_expression_type_type_parameter_t_int.dart.strong.expect
index 46529ff5f2b..40dcb554bfe 100644
--- a/pkg/front_end/testcases/inference/refine_binary_expression_type_type_parameter_t_int.dart.strong.expect
+++ b/pkg/front_end/testcases/inference/refine_binary_expression_type_type_parameter_t_int.dart.strong.expect
@@ -4,7 +4,7 @@ import "dart:core" as core;
 
 class C<T extends core::num> extends core::Object {
   field self::C::T a = null;
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
   method op(core::int b) → void {
diff --git a/pkg/front_end/testcases/inference/refine_binary_expression_type_type_parameter_t_t.dart.strong.expect b/pkg/front_end/testcases/inference/refine_binary_expression_type_type_parameter_t_t.dart.strong.expect
index be5ea723cbe..4f811394bbf 100644
--- a/pkg/front_end/testcases/inference/refine_binary_expression_type_type_parameter_t_t.dart.strong.expect
+++ b/pkg/front_end/testcases/inference/refine_binary_expression_type_type_parameter_t_t.dart.strong.expect
@@ -4,7 +4,7 @@ import "dart:core" as core;
 
 class C<T extends core::num> extends core::Object {
   field self::C::T a = null;
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
   method op(self::C::T b) → void {
diff --git a/pkg/front_end/testcases/inference/static_method_tear_off.dart.strong.expect b/pkg/front_end/testcases/inference/static_method_tear_off.dart.strong.expect
index 83d3854ef53..7d1fc327e23 100644
--- a/pkg/front_end/testcases/inference/static_method_tear_off.dart.strong.expect
+++ b/pkg/front_end/testcases/inference/static_method_tear_off.dart.strong.expect
@@ -3,7 +3,7 @@ import self as self;
 import "dart:core" as core;
 
 class C extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
   static method f(core::String s) → core::int
diff --git a/pkg/front_end/testcases/inference/subexpressions_of_explicitly_typed_fields.dart.direct.expect b/pkg/front_end/testcases/inference/subexpressions_of_explicitly_typed_fields.dart.direct.expect
index f1293b6731e..3e9c091c583 100644
--- a/pkg/front_end/testcases/inference/subexpressions_of_explicitly_typed_fields.dart.direct.expect
+++ b/pkg/front_end/testcases/inference/subexpressions_of_explicitly_typed_fields.dart.direct.expect
@@ -4,7 +4,7 @@ import "dart:core" as core;
 
 class C extends core::Object {
   field core::List<core::num> x = <dynamic>[0];
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
 }
diff --git a/pkg/front_end/testcases/inference/subexpressions_of_explicitly_typed_fields.dart.outline.expect b/pkg/front_end/testcases/inference/subexpressions_of_explicitly_typed_fields.dart.outline.expect
index 81ff2d00258..36c9cdb6fca 100644
--- a/pkg/front_end/testcases/inference/subexpressions_of_explicitly_typed_fields.dart.outline.expect
+++ b/pkg/front_end/testcases/inference/subexpressions_of_explicitly_typed_fields.dart.outline.expect
@@ -4,7 +4,7 @@ import "dart:core" as core;
 
 class C extends core::Object {
   field core::List<core::num> x;
-  constructor •() → void
+  default constructor •() → void
     ;
 }
 static field core::List<core::num> y;
diff --git a/pkg/front_end/testcases/inference/subexpressions_of_explicitly_typed_fields.dart.strong.expect b/pkg/front_end/testcases/inference/subexpressions_of_explicitly_typed_fields.dart.strong.expect
index 267f8bc9bf4..719227fd42e 100644
--- a/pkg/front_end/testcases/inference/subexpressions_of_explicitly_typed_fields.dart.strong.expect
+++ b/pkg/front_end/testcases/inference/subexpressions_of_explicitly_typed_fields.dart.strong.expect
@@ -4,7 +4,7 @@ import "dart:core" as core;
 
 class C extends core::Object {
   field core::List<core::num> x = <core::num>[0];
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
 }
diff --git a/pkg/front_end/testcases/inference/super_method_invocation.dart.direct.expect b/pkg/front_end/testcases/inference/super_method_invocation.dart.direct.expect
index 4737e0b7cb2..5e400c1b696 100644
--- a/pkg/front_end/testcases/inference/super_method_invocation.dart.direct.expect
+++ b/pkg/front_end/testcases/inference/super_method_invocation.dart.direct.expect
@@ -3,14 +3,14 @@ import self as self;
 import "dart:core" as core;
 
 class C extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
   method f() → core::int
     return 0;
 }
 class D extends self::C {
-  constructor •() → void
+  default constructor •() → void
     : super self::C::•()
     ;
   method g() → void {
diff --git a/pkg/front_end/testcases/inference/super_method_invocation.dart.outline.expect b/pkg/front_end/testcases/inference/super_method_invocation.dart.outline.expect
index 08786c6c559..4568e7f9676 100644
--- a/pkg/front_end/testcases/inference/super_method_invocation.dart.outline.expect
+++ b/pkg/front_end/testcases/inference/super_method_invocation.dart.outline.expect
@@ -3,13 +3,13 @@ import self as self;
 import "dart:core" as core;
 
 class C extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     ;
   method f() → core::int
     ;
 }
 class D extends self::C {
-  constructor •() → void
+  default constructor •() → void
     ;
   method g() → void
     ;
diff --git a/pkg/front_end/testcases/inference/super_method_invocation.dart.strong.expect b/pkg/front_end/testcases/inference/super_method_invocation.dart.strong.expect
index efbbe7cfaae..a5c0690091e 100644
--- a/pkg/front_end/testcases/inference/super_method_invocation.dart.strong.expect
+++ b/pkg/front_end/testcases/inference/super_method_invocation.dart.strong.expect
@@ -3,14 +3,14 @@ import self as self;
 import "dart:core" as core;
 
 class C extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
   method f() → core::int
     return 0;
 }
 class D extends self::C {
-  constructor •() → void
+  default constructor •() → void
     : super self::C::•()
     ;
   method g() → void {
diff --git a/pkg/front_end/testcases/inference/super_property_get.dart.direct.expect b/pkg/front_end/testcases/inference/super_property_get.dart.direct.expect
index d9832d7e730..68ec3ab94ac 100644
--- a/pkg/front_end/testcases/inference/super_property_get.dart.direct.expect
+++ b/pkg/front_end/testcases/inference/super_property_get.dart.direct.expect
@@ -4,12 +4,12 @@ import "dart:core" as core;
 
 class C extends core::Object {
   field dynamic x = 0;
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
 }
 class D extends self::C {
-  constructor •() → void
+  default constructor •() → void
     : super self::C::•()
     ;
   method g() → void {
diff --git a/pkg/front_end/testcases/inference/super_property_get.dart.outline.expect b/pkg/front_end/testcases/inference/super_property_get.dart.outline.expect
index b5e0babaa96..dceba6b6986 100644
--- a/pkg/front_end/testcases/inference/super_property_get.dart.outline.expect
+++ b/pkg/front_end/testcases/inference/super_property_get.dart.outline.expect
@@ -4,11 +4,11 @@ import "dart:core" as core;
 
 class C extends core::Object {
   field dynamic x;
-  constructor •() → void
+  default constructor •() → void
     ;
 }
 class D extends self::C {
-  constructor •() → void
+  default constructor •() → void
     ;
   method g() → void
     ;
diff --git a/pkg/front_end/testcases/inference/super_property_get.dart.strong.expect b/pkg/front_end/testcases/inference/super_property_get.dart.strong.expect
index 53677dec963..fb81110e20c 100644
--- a/pkg/front_end/testcases/inference/super_property_get.dart.strong.expect
+++ b/pkg/front_end/testcases/inference/super_property_get.dart.strong.expect
@@ -4,12 +4,12 @@ import "dart:core" as core;
 
 class C extends core::Object {
   field core::int x = 0;
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
 }
 class D extends self::C {
-  constructor •() → void
+  default constructor •() → void
     : super self::C::•()
     ;
   method g() → void {
diff --git a/pkg/front_end/testcases/inference/super_property_get_invoke_function_typed.dart.direct.expect b/pkg/front_end/testcases/inference/super_property_get_invoke_function_typed.dart.direct.expect
index e8b2a1779fb..b991d0c9369 100644
--- a/pkg/front_end/testcases/inference/super_property_get_invoke_function_typed.dart.direct.expect
+++ b/pkg/front_end/testcases/inference/super_property_get_invoke_function_typed.dart.direct.expect
@@ -4,12 +4,12 @@ import "dart:core" as core;
 
 class C extends core::Object {
   field dynamic f = () → dynamic => 0;
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
 }
 class D extends self::C {
-  constructor •() → void
+  default constructor •() → void
     : super self::C::•()
     ;
   method g() → void {
diff --git a/pkg/front_end/testcases/inference/super_property_get_invoke_function_typed.dart.outline.expect b/pkg/front_end/testcases/inference/super_property_get_invoke_function_typed.dart.outline.expect
index 9c337a6b43f..d003bc5d8aa 100644
--- a/pkg/front_end/testcases/inference/super_property_get_invoke_function_typed.dart.outline.expect
+++ b/pkg/front_end/testcases/inference/super_property_get_invoke_function_typed.dart.outline.expect
@@ -4,11 +4,11 @@ import "dart:core" as core;
 
 class C extends core::Object {
   field dynamic f;
-  constructor •() → void
+  default constructor •() → void
     ;
 }
 class D extends self::C {
-  constructor •() → void
+  default constructor •() → void
     ;
   method g() → void
     ;
diff --git a/pkg/front_end/testcases/inference/super_property_get_invoke_function_typed.dart.strong.expect b/pkg/front_end/testcases/inference/super_property_get_invoke_function_typed.dart.strong.expect
index 50857655f7b..d5477d38e36 100644
--- a/pkg/front_end/testcases/inference/super_property_get_invoke_function_typed.dart.strong.expect
+++ b/pkg/front_end/testcases/inference/super_property_get_invoke_function_typed.dart.strong.expect
@@ -4,12 +4,12 @@ import "dart:core" as core;
 
 class C extends core::Object {
   field () → core::int f = () → core::int => 0;
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
 }
 class D extends self::C {
-  constructor •() → void
+  default constructor •() → void
     : super self::C::•()
     ;
   method g() → void {
diff --git a/pkg/front_end/testcases/inference/super_property_get_invoke_implicit_call.dart.direct.expect b/pkg/front_end/testcases/inference/super_property_get_invoke_implicit_call.dart.direct.expect
index 752c2925806..2a5ca355238 100644
--- a/pkg/front_end/testcases/inference/super_property_get_invoke_implicit_call.dart.direct.expect
+++ b/pkg/front_end/testcases/inference/super_property_get_invoke_implicit_call.dart.direct.expect
@@ -3,7 +3,7 @@ import self as self;
 import "dart:core" as core;
 
 class CallableClass extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
   method call() → core::int
@@ -11,12 +11,12 @@ class CallableClass extends core::Object {
 }
 class C extends core::Object {
   field dynamic f = new self::CallableClass::•();
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
 }
 class D extends self::C {
-  constructor •() → void
+  default constructor •() → void
     : super self::C::•()
     ;
   method g() → void {
diff --git a/pkg/front_end/testcases/inference/super_property_get_invoke_implicit_call.dart.outline.expect b/pkg/front_end/testcases/inference/super_property_get_invoke_implicit_call.dart.outline.expect
index b3f34137743..bd7618a9d4a 100644
--- a/pkg/front_end/testcases/inference/super_property_get_invoke_implicit_call.dart.outline.expect
+++ b/pkg/front_end/testcases/inference/super_property_get_invoke_implicit_call.dart.outline.expect
@@ -3,18 +3,18 @@ import self as self;
 import "dart:core" as core;
 
 class CallableClass extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     ;
   method call() → core::int
     ;
 }
 class C extends core::Object {
   field dynamic f;
-  constructor •() → void
+  default constructor •() → void
     ;
 }
 class D extends self::C {
-  constructor •() → void
+  default constructor •() → void
     ;
   method g() → void
     ;
diff --git a/pkg/front_end/testcases/inference/super_property_get_invoke_implicit_call.dart.strong.expect b/pkg/front_end/testcases/inference/super_property_get_invoke_implicit_call.dart.strong.expect
index 748b1a9ef80..0b4b7af924e 100644
--- a/pkg/front_end/testcases/inference/super_property_get_invoke_implicit_call.dart.strong.expect
+++ b/pkg/front_end/testcases/inference/super_property_get_invoke_implicit_call.dart.strong.expect
@@ -3,7 +3,7 @@ import self as self;
 import "dart:core" as core;
 
 class CallableClass extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
   method call() → core::int
@@ -11,12 +11,12 @@ class CallableClass extends core::Object {
 }
 class C extends core::Object {
   field self::CallableClass f = new self::CallableClass::•();
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
 }
 class D extends self::C {
-  constructor •() → void
+  default constructor •() → void
     : super self::C::•()
     ;
   method g() → void {
diff --git a/pkg/front_end/testcases/inference/super_property_get_tearoff.dart.direct.expect b/pkg/front_end/testcases/inference/super_property_get_tearoff.dart.direct.expect
index f7456914a7a..d5ca9b9b6de 100644
--- a/pkg/front_end/testcases/inference/super_property_get_tearoff.dart.direct.expect
+++ b/pkg/front_end/testcases/inference/super_property_get_tearoff.dart.direct.expect
@@ -3,14 +3,14 @@ import self as self;
 import "dart:core" as core;
 
 class C extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
   method f() → core::int
     return 0;
 }
 class D extends self::C {
-  constructor •() → void
+  default constructor •() → void
     : super self::C::•()
     ;
   method g() → void {
diff --git a/pkg/front_end/testcases/inference/super_property_get_tearoff.dart.outline.expect b/pkg/front_end/testcases/inference/super_property_get_tearoff.dart.outline.expect
index 08786c6c559..4568e7f9676 100644
--- a/pkg/front_end/testcases/inference/super_property_get_tearoff.dart.outline.expect
+++ b/pkg/front_end/testcases/inference/super_property_get_tearoff.dart.outline.expect
@@ -3,13 +3,13 @@ import self as self;
 import "dart:core" as core;
 
 class C extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     ;
   method f() → core::int
     ;
 }
 class D extends self::C {
-  constructor •() → void
+  default constructor •() → void
     ;
   method g() → void
     ;
diff --git a/pkg/front_end/testcases/inference/super_property_get_tearoff.dart.strong.expect b/pkg/front_end/testcases/inference/super_property_get_tearoff.dart.strong.expect
index c4de143cc93..25797704eb9 100644
--- a/pkg/front_end/testcases/inference/super_property_get_tearoff.dart.strong.expect
+++ b/pkg/front_end/testcases/inference/super_property_get_tearoff.dart.strong.expect
@@ -3,14 +3,14 @@ import self as self;
 import "dart:core" as core;
 
 class C extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
   method f() → core::int
     return 0;
 }
 class D extends self::C {
-  constructor •() → void
+  default constructor •() → void
     : super self::C::•()
     ;
   method g() → void {
diff --git a/pkg/front_end/testcases/inference/this_reference.dart.direct.expect b/pkg/front_end/testcases/inference/this_reference.dart.direct.expect
index ea33b64a9a2..91e0f51a0ef 100644
--- a/pkg/front_end/testcases/inference/this_reference.dart.direct.expect
+++ b/pkg/front_end/testcases/inference/this_reference.dart.direct.expect
@@ -3,7 +3,7 @@ import self as self;
 import "dart:core" as core;
 
 class C<T extends core::Object> extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
   method f() → void {
diff --git a/pkg/front_end/testcases/inference/this_reference.dart.outline.expect b/pkg/front_end/testcases/inference/this_reference.dart.outline.expect
index 99dfe358654..9b85e5f6f7c 100644
--- a/pkg/front_end/testcases/inference/this_reference.dart.outline.expect
+++ b/pkg/front_end/testcases/inference/this_reference.dart.outline.expect
@@ -3,7 +3,7 @@ import self as self;
 import "dart:core" as core;
 
 class C<T extends core::Object> extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     ;
   method f() → void
     ;
diff --git a/pkg/front_end/testcases/inference/this_reference.dart.strong.expect b/pkg/front_end/testcases/inference/this_reference.dart.strong.expect
index c37b422366f..02ba572e5c3 100644
--- a/pkg/front_end/testcases/inference/this_reference.dart.strong.expect
+++ b/pkg/front_end/testcases/inference/this_reference.dart.strong.expect
@@ -3,7 +3,7 @@ import self as self;
 import "dart:core" as core;
 
 class C<T extends core::Object> extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
   method f() → void {
diff --git a/pkg/front_end/testcases/inference/try_catch.dart.direct.expect b/pkg/front_end/testcases/inference/try_catch.dart.direct.expect
index 7a73e4c491a..1fc62c6ecf6 100644
--- a/pkg/front_end/testcases/inference/try_catch.dart.direct.expect
+++ b/pkg/front_end/testcases/inference/try_catch.dart.direct.expect
@@ -3,17 +3,17 @@ import self as self;
 import "dart:core" as core;
 
 class C extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
 }
 class D extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
 }
 class E extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
 }
diff --git a/pkg/front_end/testcases/inference/try_catch.dart.outline.expect b/pkg/front_end/testcases/inference/try_catch.dart.outline.expect
index 2ee54a09752..f64f12b0dcb 100644
--- a/pkg/front_end/testcases/inference/try_catch.dart.outline.expect
+++ b/pkg/front_end/testcases/inference/try_catch.dart.outline.expect
@@ -3,15 +3,15 @@ import self as self;
 import "dart:core" as core;
 
 class C extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     ;
 }
 class D extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     ;
 }
 class E extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     ;
 }
 static method test(() → void f) → void
diff --git a/pkg/front_end/testcases/inference/try_catch.dart.strong.expect b/pkg/front_end/testcases/inference/try_catch.dart.strong.expect
index e84ac0cc855..3dee6da5d12 100644
--- a/pkg/front_end/testcases/inference/try_catch.dart.strong.expect
+++ b/pkg/front_end/testcases/inference/try_catch.dart.strong.expect
@@ -3,17 +3,17 @@ import self as self;
 import "dart:core" as core;
 
 class C extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
 }
 class D extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
 }
 class E extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
 }
diff --git a/pkg/front_end/testcases/inference/try_catch_finally.dart.direct.expect b/pkg/front_end/testcases/inference/try_catch_finally.dart.direct.expect
index a35a45dbf73..f1fd11b238d 100644
--- a/pkg/front_end/testcases/inference/try_catch_finally.dart.direct.expect
+++ b/pkg/front_end/testcases/inference/try_catch_finally.dart.direct.expect
@@ -3,17 +3,17 @@ import self as self;
 import "dart:core" as core;
 
 class C extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
 }
 class D extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
 }
 class E extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
 }
diff --git a/pkg/front_end/testcases/inference/try_catch_finally.dart.outline.expect b/pkg/front_end/testcases/inference/try_catch_finally.dart.outline.expect
index 2ee54a09752..f64f12b0dcb 100644
--- a/pkg/front_end/testcases/inference/try_catch_finally.dart.outline.expect
+++ b/pkg/front_end/testcases/inference/try_catch_finally.dart.outline.expect
@@ -3,15 +3,15 @@ import self as self;
 import "dart:core" as core;
 
 class C extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     ;
 }
 class D extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     ;
 }
 class E extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     ;
 }
 static method test(() → void f) → void
diff --git a/pkg/front_end/testcases/inference/try_catch_finally.dart.strong.expect b/pkg/front_end/testcases/inference/try_catch_finally.dart.strong.expect
index c586d83d5c0..ace40f82e18 100644
--- a/pkg/front_end/testcases/inference/try_catch_finally.dart.strong.expect
+++ b/pkg/front_end/testcases/inference/try_catch_finally.dart.strong.expect
@@ -3,17 +3,17 @@ import self as self;
 import "dart:core" as core;
 
 class C extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
 }
 class D extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
 }
 class E extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
 }
diff --git a/pkg/front_end/testcases/inference/try_catch_promotion.dart.direct.expect b/pkg/front_end/testcases/inference/try_catch_promotion.dart.direct.expect
index e8850d3a288..0e421fc0356 100644
--- a/pkg/front_end/testcases/inference/try_catch_promotion.dart.direct.expect
+++ b/pkg/front_end/testcases/inference/try_catch_promotion.dart.direct.expect
@@ -3,17 +3,17 @@ import self as self;
 import "dart:core" as core;
 
 class C extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
 }
 class D extends self::C {
-  constructor •() → void
+  default constructor •() → void
     : super self::C::•()
     ;
 }
 class E extends core::StackTrace {
-  constructor •() → void
+  default constructor •() → void
     : super core::StackTrace::•()
     ;
 }
diff --git a/pkg/front_end/testcases/inference/try_catch_promotion.dart.outline.expect b/pkg/front_end/testcases/inference/try_catch_promotion.dart.outline.expect
index 17ac88f8db0..bbc32f2679c 100644
--- a/pkg/front_end/testcases/inference/try_catch_promotion.dart.outline.expect
+++ b/pkg/front_end/testcases/inference/try_catch_promotion.dart.outline.expect
@@ -3,15 +3,15 @@ import self as self;
 import "dart:core" as core;
 
 class C extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     ;
 }
 class D extends self::C {
-  constructor •() → void
+  default constructor •() → void
     ;
 }
 class E extends core::StackTrace {
-  constructor •() → void
+  default constructor •() → void
     ;
 }
 static method test(() → void f) → void
diff --git a/pkg/front_end/testcases/inference/try_catch_promotion.dart.strong.expect b/pkg/front_end/testcases/inference/try_catch_promotion.dart.strong.expect
index 3fb67e6d543..3af5e526639 100644
--- a/pkg/front_end/testcases/inference/try_catch_promotion.dart.strong.expect
+++ b/pkg/front_end/testcases/inference/try_catch_promotion.dart.strong.expect
@@ -3,17 +3,17 @@ import self as self;
 import "dart:core" as core;
 
 class C extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
 }
 class D extends self::C {
-  constructor •() → void
+  default constructor •() → void
     : super self::C::•()
     ;
 }
 class E extends core::StackTrace {
-  constructor •() → void
+  default constructor •() → void
     : super core::StackTrace::•()
     ;
 }
diff --git a/pkg/front_end/testcases/inference/type_cast.dart.direct.expect b/pkg/front_end/testcases/inference/type_cast.dart.direct.expect
index f38f4286fef..b0705b927c8 100644
--- a/pkg/front_end/testcases/inference/type_cast.dart.direct.expect
+++ b/pkg/front_end/testcases/inference/type_cast.dart.direct.expect
@@ -3,12 +3,12 @@ import self as self;
 import "dart:core" as core;
 
 class A<T extends core::Object> extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
 }
 class B<T extends core::Object> extends self::A<self::B::T> {
-  constructor •() → void
+  default constructor •() → void
     : super self::A::•()
     ;
   method foo() → dynamic {}
diff --git a/pkg/front_end/testcases/inference/type_cast.dart.outline.expect b/pkg/front_end/testcases/inference/type_cast.dart.outline.expect
index c6ac78218b3..aee9eb42b86 100644
--- a/pkg/front_end/testcases/inference/type_cast.dart.outline.expect
+++ b/pkg/front_end/testcases/inference/type_cast.dart.outline.expect
@@ -3,11 +3,11 @@ import self as self;
 import "dart:core" as core;
 
 class A<T extends core::Object> extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     ;
 }
 class B<T extends core::Object> extends self::A<self::B::T> {
-  constructor •() → void
+  default constructor •() → void
     ;
   method foo() → dynamic
     ;
diff --git a/pkg/front_end/testcases/inference/type_cast.dart.strong.expect b/pkg/front_end/testcases/inference/type_cast.dart.strong.expect
index f48f34d9e73..6407324a47f 100644
--- a/pkg/front_end/testcases/inference/type_cast.dart.strong.expect
+++ b/pkg/front_end/testcases/inference/type_cast.dart.strong.expect
@@ -3,12 +3,12 @@ import self as self;
 import "dart:core" as core;
 
 class A<T extends core::Object> extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
 }
 class B<T extends core::Object> extends self::A<self::B::T> {
-  constructor •() → void
+  default constructor •() → void
     : super self::A::•()
     ;
   method foo() → dynamic {}
diff --git a/pkg/front_end/testcases/inference/unresolved_super.dart.direct.expect b/pkg/front_end/testcases/inference/unresolved_super.dart.direct.expect
index 4926c4a81c6..0c99d6c84b5 100644
--- a/pkg/front_end/testcases/inference/unresolved_super.dart.direct.expect
+++ b/pkg/front_end/testcases/inference/unresolved_super.dart.direct.expect
@@ -3,7 +3,7 @@ import self as self;
 import "dart:core" as core;
 
 class C extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
   method test() → void {
diff --git a/pkg/front_end/testcases/inference/unresolved_super.dart.outline.expect b/pkg/front_end/testcases/inference/unresolved_super.dart.outline.expect
index 69efe56dc7f..0e39783a242 100644
--- a/pkg/front_end/testcases/inference/unresolved_super.dart.outline.expect
+++ b/pkg/front_end/testcases/inference/unresolved_super.dart.outline.expect
@@ -3,7 +3,7 @@ import self as self;
 import "dart:core" as core;
 
 class C extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     ;
   method test() → void
     ;
diff --git a/pkg/front_end/testcases/inference/unresolved_super.dart.strong.expect b/pkg/front_end/testcases/inference/unresolved_super.dart.strong.expect
index 4926c4a81c6..0c99d6c84b5 100644
--- a/pkg/front_end/testcases/inference/unresolved_super.dart.strong.expect
+++ b/pkg/front_end/testcases/inference/unresolved_super.dart.strong.expect
@@ -3,7 +3,7 @@ import self as self;
 import "dart:core" as core;
 
 class C extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
   method test() → void {
diff --git a/pkg/front_end/testcases/inference/unsafe_block_closure_inference_method_call_explicit_dynamic_param.dart.strong.expect b/pkg/front_end/testcases/inference/unsafe_block_closure_inference_method_call_explicit_dynamic_param.dart.strong.expect
index 82cff5bbfcd..8061f270a3b 100644
--- a/pkg/front_end/testcases/inference/unsafe_block_closure_inference_method_call_explicit_dynamic_param.dart.strong.expect
+++ b/pkg/front_end/testcases/inference/unsafe_block_closure_inference_method_call_explicit_dynamic_param.dart.strong.expect
@@ -3,7 +3,7 @@ import self as self;
 import "dart:core" as core;
 
 class C extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
   method f<T extends core::Object>(() → self::C::f::T g) → core::List<self::C::f::T>
diff --git a/pkg/front_end/testcases/inference/unsafe_block_closure_inference_method_call_explicit_type_param.dart.strong.expect b/pkg/front_end/testcases/inference/unsafe_block_closure_inference_method_call_explicit_type_param.dart.strong.expect
index d239c11cded..6dbc7b94ae2 100644
--- a/pkg/front_end/testcases/inference/unsafe_block_closure_inference_method_call_explicit_type_param.dart.strong.expect
+++ b/pkg/front_end/testcases/inference/unsafe_block_closure_inference_method_call_explicit_type_param.dart.strong.expect
@@ -3,7 +3,7 @@ import self as self;
 import "dart:core" as core;
 
 class C extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
   method f<T extends core::Object>(() → self::C::f::T g) → core::List<self::C::f::T>
diff --git a/pkg/front_end/testcases/inference/unsafe_block_closure_inference_method_call_implicit_type_param.dart.strong.expect b/pkg/front_end/testcases/inference/unsafe_block_closure_inference_method_call_implicit_type_param.dart.strong.expect
index d239c11cded..6dbc7b94ae2 100644
--- a/pkg/front_end/testcases/inference/unsafe_block_closure_inference_method_call_implicit_type_param.dart.strong.expect
+++ b/pkg/front_end/testcases/inference/unsafe_block_closure_inference_method_call_implicit_type_param.dart.strong.expect
@@ -3,7 +3,7 @@ import self as self;
 import "dart:core" as core;
 
 class C extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
   method f<T extends core::Object>(() → self::C::f::T g) → core::List<self::C::f::T>
diff --git a/pkg/front_end/testcases/inference/unsafe_block_closure_inference_method_call_no_type_param.dart.strong.expect b/pkg/front_end/testcases/inference/unsafe_block_closure_inference_method_call_no_type_param.dart.strong.expect
index 9de7b958ac5..6aaab51c734 100644
--- a/pkg/front_end/testcases/inference/unsafe_block_closure_inference_method_call_no_type_param.dart.strong.expect
+++ b/pkg/front_end/testcases/inference/unsafe_block_closure_inference_method_call_no_type_param.dart.strong.expect
@@ -3,7 +3,7 @@ import self as self;
 import "dart:core" as core;
 
 class C extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
   method f(dynamic x) → core::double
diff --git a/pkg/front_end/testcases/inference_new/dependency_only_if_generic_method.dart.direct.expect b/pkg/front_end/testcases/inference_new/dependency_only_if_generic_method.dart.direct.expect
index 9868cfcc19d..874bd97a3c9 100644
--- a/pkg/front_end/testcases/inference_new/dependency_only_if_generic_method.dart.direct.expect
+++ b/pkg/front_end/testcases/inference_new/dependency_only_if_generic_method.dart.direct.expect
@@ -3,7 +3,7 @@ import self as self;
 import "dart:core" as core;
 
 class A extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
   method f<T extends core::Object>(self::A::f::T t) → self::A::f::T
diff --git a/pkg/front_end/testcases/inference_new/dependency_only_if_generic_method.dart.outline.expect b/pkg/front_end/testcases/inference_new/dependency_only_if_generic_method.dart.outline.expect
index 89b02cd768d..6131ae2cec6 100644
--- a/pkg/front_end/testcases/inference_new/dependency_only_if_generic_method.dart.outline.expect
+++ b/pkg/front_end/testcases/inference_new/dependency_only_if_generic_method.dart.outline.expect
@@ -3,7 +3,7 @@ import self as self;
 import "dart:core" as core;
 
 class A extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     ;
   method f<T extends core::Object>(self::A::f::T t) → self::A::f::T
     ;
diff --git a/pkg/front_end/testcases/inference_new/dependency_only_if_generic_method.dart.strong.expect b/pkg/front_end/testcases/inference_new/dependency_only_if_generic_method.dart.strong.expect
index 700a99d70a0..c5d787c9dd8 100644
--- a/pkg/front_end/testcases/inference_new/dependency_only_if_generic_method.dart.strong.expect
+++ b/pkg/front_end/testcases/inference_new/dependency_only_if_generic_method.dart.strong.expect
@@ -3,7 +3,7 @@ import self as self;
 import "dart:core" as core;
 
 class A extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
   method f<T extends core::Object>(self::A::f::T t) → self::A::f::T
diff --git a/pkg/front_end/testcases/inference_new/downwards_inference_inside_top_level.dart.direct.expect b/pkg/front_end/testcases/inference_new/downwards_inference_inside_top_level.dart.direct.expect
index e34cfe9d771..6f53943fcca 100644
--- a/pkg/front_end/testcases/inference_new/downwards_inference_inside_top_level.dart.direct.expect
+++ b/pkg/front_end/testcases/inference_new/downwards_inference_inside_top_level.dart.direct.expect
@@ -4,7 +4,7 @@ import "dart:core" as core;
 
 class A extends core::Object {
   field self::B<core::int> b = null;
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
 }
diff --git a/pkg/front_end/testcases/inference_new/downwards_inference_inside_top_level.dart.outline.expect b/pkg/front_end/testcases/inference_new/downwards_inference_inside_top_level.dart.outline.expect
index ecf1742271e..232fa41f10f 100644
--- a/pkg/front_end/testcases/inference_new/downwards_inference_inside_top_level.dart.outline.expect
+++ b/pkg/front_end/testcases/inference_new/downwards_inference_inside_top_level.dart.outline.expect
@@ -4,7 +4,7 @@ import "dart:core" as core;
 
 class A extends core::Object {
   field self::B<core::int> b;
-  constructor •() → void
+  default constructor •() → void
     ;
 }
 class B<T extends core::Object> extends core::Object {
diff --git a/pkg/front_end/testcases/inference_new/downwards_inference_inside_top_level.dart.strong.expect b/pkg/front_end/testcases/inference_new/downwards_inference_inside_top_level.dart.strong.expect
index 47a67f580ed..913f0d4c57a 100644
--- a/pkg/front_end/testcases/inference_new/downwards_inference_inside_top_level.dart.strong.expect
+++ b/pkg/front_end/testcases/inference_new/downwards_inference_inside_top_level.dart.strong.expect
@@ -4,7 +4,7 @@ import "dart:core" as core;
 
 class A extends core::Object {
   field self::B<core::int> b = null;
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
 }
diff --git a/pkg/front_end/testcases/inference_new/field_inference_circularity.dart.direct.expect b/pkg/front_end/testcases/inference_new/field_inference_circularity.dart.direct.expect
index 88b72a580b8..1799e262d40 100644
--- a/pkg/front_end/testcases/inference_new/field_inference_circularity.dart.direct.expect
+++ b/pkg/front_end/testcases/inference_new/field_inference_circularity.dart.direct.expect
@@ -5,14 +5,14 @@ import "dart:core" as core;
 class A extends core::Object {
   field dynamic x = () → dynamic => new self::B::•().x;
   field dynamic y = () → dynamic => new self::B::•().x;
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
 }
 class B extends self::A {
   field dynamic x = null;
   field dynamic y = null;
-  constructor •() → void
+  default constructor •() → void
     : super self::A::•()
     ;
 }
diff --git a/pkg/front_end/testcases/inference_new/field_inference_circularity.dart.outline.expect b/pkg/front_end/testcases/inference_new/field_inference_circularity.dart.outline.expect
index a92243597c0..3a623f2d0a6 100644
--- a/pkg/front_end/testcases/inference_new/field_inference_circularity.dart.outline.expect
+++ b/pkg/front_end/testcases/inference_new/field_inference_circularity.dart.outline.expect
@@ -5,13 +5,13 @@ import "dart:core" as core;
 class A extends core::Object {
   field dynamic x;
   field dynamic y;
-  constructor •() → void
+  default constructor •() → void
     ;
 }
 class B extends self::A {
   field dynamic x;
   field dynamic y;
-  constructor •() → void
+  default constructor •() → void
     ;
 }
 static method main() → dynamic
diff --git a/pkg/front_end/testcases/inference_new/field_inference_circularity.dart.strong.expect b/pkg/front_end/testcases/inference_new/field_inference_circularity.dart.strong.expect
index 9454b582c13..f6aa303c912 100644
--- a/pkg/front_end/testcases/inference_new/field_inference_circularity.dart.strong.expect
+++ b/pkg/front_end/testcases/inference_new/field_inference_circularity.dart.strong.expect
@@ -5,14 +5,14 @@ import "dart:core" as core;
 class A extends core::Object {
   field dynamic x = () → dynamic => new self::B::•().{self::B::x};
   field () → dynamic y = () → dynamic => new self::B::•().{self::B::x};
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
 }
 class B extends self::A {
   field dynamic x = null;
   field () → dynamic y = null;
-  constructor •() → void
+  default constructor •() → void
     : super self::A::•()
     ;
 }
diff --git a/pkg/front_end/testcases/inference_new/infer_assign_to_property.dart.direct.expect b/pkg/front_end/testcases/inference_new/infer_assign_to_property.dart.direct.expect
index 49cb344f44e..cc6f450eb16 100644
--- a/pkg/front_end/testcases/inference_new/infer_assign_to_property.dart.direct.expect
+++ b/pkg/front_end/testcases/inference_new/infer_assign_to_property.dart.direct.expect
@@ -4,7 +4,7 @@ import "dart:core" as core;
 
 class A extends core::Object {
   field core::int f = null;
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
 }
diff --git a/pkg/front_end/testcases/inference_new/infer_assign_to_property.dart.outline.expect b/pkg/front_end/testcases/inference_new/infer_assign_to_property.dart.outline.expect
index b08e8cde078..ffb3600be8b 100644
--- a/pkg/front_end/testcases/inference_new/infer_assign_to_property.dart.outline.expect
+++ b/pkg/front_end/testcases/inference_new/infer_assign_to_property.dart.outline.expect
@@ -4,7 +4,7 @@ import "dart:core" as core;
 
 class A extends core::Object {
   field core::int f;
-  constructor •() → void
+  default constructor •() → void
     ;
 }
 static field dynamic v_assign;
diff --git a/pkg/front_end/testcases/inference_new/infer_assign_to_property.dart.strong.expect b/pkg/front_end/testcases/inference_new/infer_assign_to_property.dart.strong.expect
index 7278b8b687a..6b797d81063 100644
--- a/pkg/front_end/testcases/inference_new/infer_assign_to_property.dart.strong.expect
+++ b/pkg/front_end/testcases/inference_new/infer_assign_to_property.dart.strong.expect
@@ -4,7 +4,7 @@ import "dart:core" as core;
 
 class A extends core::Object {
   field core::int f = null;
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
 }
diff --git a/pkg/front_end/testcases/inference_new/infer_assign_to_property_custom.dart.direct.expect b/pkg/front_end/testcases/inference_new/infer_assign_to_property_custom.dart.direct.expect
index 5591bc4d599..64e6de9366b 100644
--- a/pkg/front_end/testcases/inference_new/infer_assign_to_property_custom.dart.direct.expect
+++ b/pkg/front_end/testcases/inference_new/infer_assign_to_property_custom.dart.direct.expect
@@ -3,7 +3,7 @@ import self as self;
 import "dart:core" as core;
 
 class A extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
   operator +(dynamic other) → core::int
@@ -13,7 +13,7 @@ class A extends core::Object {
 }
 class B extends core::Object {
   field self::A a = null;
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
 }
diff --git a/pkg/front_end/testcases/inference_new/infer_assign_to_property_custom.dart.outline.expect b/pkg/front_end/testcases/inference_new/infer_assign_to_property_custom.dart.outline.expect
index a2273ac7657..987fb55afbc 100644
--- a/pkg/front_end/testcases/inference_new/infer_assign_to_property_custom.dart.outline.expect
+++ b/pkg/front_end/testcases/inference_new/infer_assign_to_property_custom.dart.outline.expect
@@ -3,7 +3,7 @@ import self as self;
 import "dart:core" as core;
 
 class A extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     ;
   operator +(dynamic other) → core::int
     ;
@@ -12,7 +12,7 @@ class A extends core::Object {
 }
 class B extends core::Object {
   field self::A a;
-  constructor •() → void
+  default constructor •() → void
     ;
 }
 static field dynamic v_prefix_pp;
diff --git a/pkg/front_end/testcases/inference_new/infer_assign_to_property_custom.dart.strong.expect b/pkg/front_end/testcases/inference_new/infer_assign_to_property_custom.dart.strong.expect
index 09ebbe62061..ba950af8f24 100644
--- a/pkg/front_end/testcases/inference_new/infer_assign_to_property_custom.dart.strong.expect
+++ b/pkg/front_end/testcases/inference_new/infer_assign_to_property_custom.dart.strong.expect
@@ -3,7 +3,7 @@ import self as self;
 import "dart:core" as core;
 
 class A extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
   operator +(dynamic other) → core::int
@@ -13,7 +13,7 @@ class A extends core::Object {
 }
 class B extends core::Object {
   field self::A a = null;
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
 }
diff --git a/pkg/front_end/testcases/inference_new/infer_assign_to_ref.dart.direct.expect b/pkg/front_end/testcases/inference_new/infer_assign_to_ref.dart.direct.expect
index 18ae6a7b187..75e1c71f910 100644
--- a/pkg/front_end/testcases/inference_new/infer_assign_to_ref.dart.direct.expect
+++ b/pkg/front_end/testcases/inference_new/infer_assign_to_ref.dart.direct.expect
@@ -4,7 +4,7 @@ import "dart:core" as core;
 
 class A extends core::Object {
   field core::int f = null;
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
 }
diff --git a/pkg/front_end/testcases/inference_new/infer_assign_to_ref.dart.outline.expect b/pkg/front_end/testcases/inference_new/infer_assign_to_ref.dart.outline.expect
index a5017b26fe8..f27b342e7ae 100644
--- a/pkg/front_end/testcases/inference_new/infer_assign_to_ref.dart.outline.expect
+++ b/pkg/front_end/testcases/inference_new/infer_assign_to_ref.dart.outline.expect
@@ -4,7 +4,7 @@ import "dart:core" as core;
 
 class A extends core::Object {
   field core::int f;
-  constructor •() → void
+  default constructor •() → void
     ;
 }
 static field self::A a;
diff --git a/pkg/front_end/testcases/inference_new/infer_assign_to_ref.dart.strong.expect b/pkg/front_end/testcases/inference_new/infer_assign_to_ref.dart.strong.expect
index 4593eca0ed9..e51e92c4c24 100644
--- a/pkg/front_end/testcases/inference_new/infer_assign_to_ref.dart.strong.expect
+++ b/pkg/front_end/testcases/inference_new/infer_assign_to_ref.dart.strong.expect
@@ -4,7 +4,7 @@ import "dart:core" as core;
 
 class A extends core::Object {
   field core::int f = null;
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
 }
diff --git a/pkg/front_end/testcases/inference_new/infer_instance_accessor_ref.dart.direct.expect b/pkg/front_end/testcases/inference_new/infer_instance_accessor_ref.dart.direct.expect
index 183c1485b37..50f1e2250ea 100644
--- a/pkg/front_end/testcases/inference_new/infer_instance_accessor_ref.dart.direct.expect
+++ b/pkg/front_end/testcases/inference_new/infer_instance_accessor_ref.dart.direct.expect
@@ -4,12 +4,12 @@ import "dart:core" as core;
 
 class A extends core::Object {
   field self::B b = null;
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
 }
 class B extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
   get c() → self::C
@@ -17,12 +17,12 @@ class B extends core::Object {
   set c(self::C value) → void {}
 }
 class C extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
 }
 class D extends self::C {
-  constructor •() → void
+  default constructor •() → void
     : super self::C::•()
     ;
 }
diff --git a/pkg/front_end/testcases/inference_new/infer_instance_accessor_ref.dart.outline.expect b/pkg/front_end/testcases/inference_new/infer_instance_accessor_ref.dart.outline.expect
index 51ac9ee050d..2d146c8ca28 100644
--- a/pkg/front_end/testcases/inference_new/infer_instance_accessor_ref.dart.outline.expect
+++ b/pkg/front_end/testcases/inference_new/infer_instance_accessor_ref.dart.outline.expect
@@ -4,11 +4,11 @@ import "dart:core" as core;
 
 class A extends core::Object {
   field self::B b;
-  constructor •() → void
+  default constructor •() → void
     ;
 }
 class B extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     ;
   get c() → self::C
     ;
@@ -16,11 +16,11 @@ class B extends core::Object {
     ;
 }
 class C extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     ;
 }
 class D extends self::C {
-  constructor •() → void
+  default constructor •() → void
     ;
 }
 static field dynamic a;
diff --git a/pkg/front_end/testcases/inference_new/infer_instance_accessor_ref.dart.strong.expect b/pkg/front_end/testcases/inference_new/infer_instance_accessor_ref.dart.strong.expect
index 1a3ee8a286a..0e9ee9a8b2a 100644
--- a/pkg/front_end/testcases/inference_new/infer_instance_accessor_ref.dart.strong.expect
+++ b/pkg/front_end/testcases/inference_new/infer_instance_accessor_ref.dart.strong.expect
@@ -4,12 +4,12 @@ import "dart:core" as core;
 
 class A extends core::Object {
   field self::B b = null;
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
 }
 class B extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
   get c() → self::C
@@ -17,12 +17,12 @@ class B extends core::Object {
   set c(self::C value) → void {}
 }
 class C extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
 }
 class D extends self::C {
-  constructor •() → void
+  default constructor •() → void
     : super self::C::•()
     ;
 }
diff --git a/pkg/front_end/testcases/inference_new/infer_instance_field_ref.dart.direct.expect b/pkg/front_end/testcases/inference_new/infer_instance_field_ref.dart.direct.expect
index 3b8b25ef217..5a8ae1c37c1 100644
--- a/pkg/front_end/testcases/inference_new/infer_instance_field_ref.dart.direct.expect
+++ b/pkg/front_end/testcases/inference_new/infer_instance_field_ref.dart.direct.expect
@@ -4,23 +4,23 @@ import "dart:core" as core;
 
 class A extends core::Object {
   field self::B b = null;
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
 }
 class B extends core::Object {
   field self::C c = null;
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
 }
 class C extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
 }
 class D extends self::C {
-  constructor •() → void
+  default constructor •() → void
     : super self::C::•()
     ;
 }
diff --git a/pkg/front_end/testcases/inference_new/infer_instance_field_ref.dart.outline.expect b/pkg/front_end/testcases/inference_new/infer_instance_field_ref.dart.outline.expect
index d5e50fb25ea..1c2caf9328a 100644
--- a/pkg/front_end/testcases/inference_new/infer_instance_field_ref.dart.outline.expect
+++ b/pkg/front_end/testcases/inference_new/infer_instance_field_ref.dart.outline.expect
@@ -4,20 +4,20 @@ import "dart:core" as core;
 
 class A extends core::Object {
   field self::B b;
-  constructor •() → void
+  default constructor •() → void
     ;
 }
 class B extends core::Object {
   field self::C c;
-  constructor •() → void
+  default constructor •() → void
     ;
 }
 class C extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     ;
 }
 class D extends self::C {
-  constructor •() → void
+  default constructor •() → void
     ;
 }
 static field dynamic a;
diff --git a/pkg/front_end/testcases/inference_new/infer_instance_field_ref.dart.strong.expect b/pkg/front_end/testcases/inference_new/infer_instance_field_ref.dart.strong.expect
index e2e3748d92d..6cb39002741 100644
--- a/pkg/front_end/testcases/inference_new/infer_instance_field_ref.dart.strong.expect
+++ b/pkg/front_end/testcases/inference_new/infer_instance_field_ref.dart.strong.expect
@@ -4,23 +4,23 @@ import "dart:core" as core;
 
 class A extends core::Object {
   field self::B b = null;
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
 }
 class B extends core::Object {
   field self::C c = null;
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
 }
 class C extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
 }
 class D extends self::C {
-  constructor •() → void
+  default constructor •() → void
     : super self::C::•()
     ;
 }
diff --git a/pkg/front_end/testcases/inference_new/infer_instance_field_ref_circular.dart.direct.expect b/pkg/front_end/testcases/inference_new/infer_instance_field_ref_circular.dart.direct.expect
index b21b78ba9c8..e53d85930e6 100644
--- a/pkg/front_end/testcases/inference_new/infer_instance_field_ref_circular.dart.direct.expect
+++ b/pkg/front_end/testcases/inference_new/infer_instance_field_ref_circular.dart.direct.expect
@@ -5,7 +5,7 @@ import "dart:core" as core;
 class A extends core::Object {
   field dynamic b = () → dynamic => self::x;
   field dynamic c = () → dynamic => self::x;
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
 }
diff --git a/pkg/front_end/testcases/inference_new/infer_instance_field_ref_circular.dart.outline.expect b/pkg/front_end/testcases/inference_new/infer_instance_field_ref_circular.dart.outline.expect
index 1455ec388e5..e6939646fe3 100644
--- a/pkg/front_end/testcases/inference_new/infer_instance_field_ref_circular.dart.outline.expect
+++ b/pkg/front_end/testcases/inference_new/infer_instance_field_ref_circular.dart.outline.expect
@@ -5,7 +5,7 @@ import "dart:core" as core;
 class A extends core::Object {
   field dynamic b;
   field dynamic c;
-  constructor •() → void
+  default constructor •() → void
     ;
 }
 static field dynamic a;
diff --git a/pkg/front_end/testcases/inference_new/infer_instance_field_ref_circular.dart.strong.expect b/pkg/front_end/testcases/inference_new/infer_instance_field_ref_circular.dart.strong.expect
index 2268a69f45d..f475a190651 100644
--- a/pkg/front_end/testcases/inference_new/infer_instance_field_ref_circular.dart.strong.expect
+++ b/pkg/front_end/testcases/inference_new/infer_instance_field_ref_circular.dart.strong.expect
@@ -5,7 +5,7 @@ import "dart:core" as core;
 class A extends core::Object {
   field dynamic b = () → dynamic => self::x;
   field () → dynamic c = () → dynamic => self::x;
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
 }
diff --git a/pkg/front_end/testcases/inference_new/infer_use_of_void.dart.direct.expect b/pkg/front_end/testcases/inference_new/infer_use_of_void.dart.direct.expect
index 1ec9b60a072..94f4cfb9df9 100644
--- a/pkg/front_end/testcases/inference_new/infer_use_of_void.dart.direct.expect
+++ b/pkg/front_end/testcases/inference_new/infer_use_of_void.dart.direct.expect
@@ -3,13 +3,13 @@ import self as self;
 import "dart:core" as core;
 
 class B extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
   method f() → void {}
 }
 class C extends self::B {
-  constructor •() → void
+  default constructor •() → void
     : super self::B::•()
     ;
   method f() → dynamic {}
diff --git a/pkg/front_end/testcases/inference_new/infer_use_of_void.dart.outline.expect b/pkg/front_end/testcases/inference_new/infer_use_of_void.dart.outline.expect
index 0e47bce8299..0ff38be42f4 100644
--- a/pkg/front_end/testcases/inference_new/infer_use_of_void.dart.outline.expect
+++ b/pkg/front_end/testcases/inference_new/infer_use_of_void.dart.outline.expect
@@ -3,13 +3,13 @@ import self as self;
 import "dart:core" as core;
 
 class B extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     ;
   method f() → void
     ;
 }
 class C extends self::B {
-  constructor •() → void
+  default constructor •() → void
     ;
   method f() → dynamic
     ;
diff --git a/pkg/front_end/testcases/inference_new/infer_use_of_void.dart.strong.expect b/pkg/front_end/testcases/inference_new/infer_use_of_void.dart.strong.expect
index 9122623714b..1b26cccb641 100644
--- a/pkg/front_end/testcases/inference_new/infer_use_of_void.dart.strong.expect
+++ b/pkg/front_end/testcases/inference_new/infer_use_of_void.dart.strong.expect
@@ -3,13 +3,13 @@ import self as self;
 import "dart:core" as core;
 
 class B extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
   method f() → void {}
 }
 class C extends self::B {
-  constructor •() → void
+  default constructor •() → void
     : super self::B::•()
     ;
   method f() → void {}
diff --git a/pkg/front_end/testcases/inference_new/property_get_toplevel.dart.direct.expect b/pkg/front_end/testcases/inference_new/property_get_toplevel.dart.direct.expect
index 403c6deb18c..ca2ff66bb29 100644
--- a/pkg/front_end/testcases/inference_new/property_get_toplevel.dart.direct.expect
+++ b/pkg/front_end/testcases/inference_new/property_get_toplevel.dart.direct.expect
@@ -4,7 +4,7 @@ import "dart:core" as core;
 
 class C extends core::Object {
   field core::int field = 0;
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
   get getter() → core::int
diff --git a/pkg/front_end/testcases/inference_new/property_get_toplevel.dart.outline.expect b/pkg/front_end/testcases/inference_new/property_get_toplevel.dart.outline.expect
index 77bcf2a7a65..62a5ccfdb1c 100644
--- a/pkg/front_end/testcases/inference_new/property_get_toplevel.dart.outline.expect
+++ b/pkg/front_end/testcases/inference_new/property_get_toplevel.dart.outline.expect
@@ -4,7 +4,7 @@ import "dart:core" as core;
 
 class C extends core::Object {
   field core::int field;
-  constructor •() → void
+  default constructor •() → void
     ;
   get getter() → core::int
     ;
diff --git a/pkg/front_end/testcases/inference_new/property_get_toplevel.dart.strong.expect b/pkg/front_end/testcases/inference_new/property_get_toplevel.dart.strong.expect
index 05da2321b97..877fb88b124 100644
--- a/pkg/front_end/testcases/inference_new/property_get_toplevel.dart.strong.expect
+++ b/pkg/front_end/testcases/inference_new/property_get_toplevel.dart.strong.expect
@@ -4,7 +4,7 @@ import "dart:core" as core;
 
 class C extends core::Object {
   field core::int field = 0;
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
   get getter() → core::int
diff --git a/pkg/front_end/testcases/micro.dart.direct.expect b/pkg/front_end/testcases/micro.dart.direct.expect
index 585ce1994c7..3b5fe3ed020 100644
--- a/pkg/front_end/testcases/micro.dart.direct.expect
+++ b/pkg/front_end/testcases/micro.dart.direct.expect
@@ -3,7 +3,7 @@ import self as self;
 import "dart:core" as core;
 
 class Foo extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
   method instanceMethod() → dynamic {
@@ -11,19 +11,19 @@ class Foo extends core::Object {
   }
 }
 abstract class ExternalValue extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
 }
 abstract class Bar extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
   abstract method externalInstanceMethod() → self::ExternalValue;
 }
 class Box extends core::Object {
   field dynamic field = null;
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
 }
@@ -39,13 +39,13 @@ class SubFinalBox extends self::FinalBox {
     ;
 }
 class DynamicReceiver1 extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
   method dynamicallyCalled(dynamic x) → dynamic {}
 }
 class DynamicReceiver2 extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
   method dynamicallyCalled(dynamic x) → dynamic {}
@@ -53,8 +53,8 @@ class DynamicReceiver2 extends core::Object {
 static method staticMethod() → dynamic {
   return "sdfg";
 }
-external static method externalStatic() → core::bool;
-external static method createBar() → self::Bar;
+external static abstract method externalStatic() → core::bool;
+external static abstract method createBar() → self::Bar;
 static method stringArgument(dynamic x) → dynamic {}
 static method intArgument(dynamic x) → dynamic {}
 static method makeDynamicCall(dynamic receiver) → void {
diff --git a/pkg/front_end/testcases/micro.dart.outline.expect b/pkg/front_end/testcases/micro.dart.outline.expect
index d0dd618eb21..a047f13df1e 100644
--- a/pkg/front_end/testcases/micro.dart.outline.expect
+++ b/pkg/front_end/testcases/micro.dart.outline.expect
@@ -3,23 +3,23 @@ import self as self;
 import "dart:core" as core;
 
 class Foo extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     ;
   method instanceMethod() → dynamic
     ;
 }
 abstract class ExternalValue extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     ;
 }
 abstract class Bar extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     ;
   abstract method externalInstanceMethod() → self::ExternalValue;
 }
 class Box extends core::Object {
   field dynamic field;
-  constructor •() → void
+  default constructor •() → void
     ;
 }
 class FinalBox extends core::Object {
@@ -32,13 +32,13 @@ class SubFinalBox extends self::FinalBox {
     ;
 }
 class DynamicReceiver1 extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     ;
   method dynamicallyCalled(dynamic x) → dynamic
     ;
 }
 class DynamicReceiver2 extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     ;
   method dynamicallyCalled(dynamic x) → dynamic
     ;
diff --git a/pkg/front_end/testcases/micro.dart.strong.expect b/pkg/front_end/testcases/micro.dart.strong.expect
index fdc6c950508..8c084282e27 100644
--- a/pkg/front_end/testcases/micro.dart.strong.expect
+++ b/pkg/front_end/testcases/micro.dart.strong.expect
@@ -3,7 +3,7 @@ import self as self;
 import "dart:core" as core;
 
 class Foo extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
   method instanceMethod() → dynamic {
@@ -11,19 +11,19 @@ class Foo extends core::Object {
   }
 }
 abstract class ExternalValue extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
 }
 abstract class Bar extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
   abstract method externalInstanceMethod() → self::ExternalValue;
 }
 class Box extends core::Object {
   field dynamic field = null;
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
 }
@@ -39,13 +39,13 @@ class SubFinalBox extends self::FinalBox {
     ;
 }
 class DynamicReceiver1 extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
   method dynamicallyCalled(dynamic x) → dynamic {}
 }
 class DynamicReceiver2 extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
   method dynamicallyCalled(dynamic x) → dynamic {}
diff --git a/pkg/front_end/testcases/mixin.dart.direct.expect b/pkg/front_end/testcases/mixin.dart.direct.expect
index 2698b68a87d..3d5342cc9d2 100644
--- a/pkg/front_end/testcases/mixin.dart.direct.expect
+++ b/pkg/front_end/testcases/mixin.dart.direct.expect
@@ -12,14 +12,14 @@ class B extends self::Object&M1&M2 {
     ;
 }
 abstract class M1 extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
   method m() → dynamic
     return core::print("M1");
 }
 abstract class M2 extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
   method m() → dynamic
@@ -31,7 +31,7 @@ class C extends self::Object&M1&M2 {
     ;
 }
 abstract class G1<T extends core::Object> extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
   method m() → dynamic
@@ -40,7 +40,7 @@ abstract class G1<T extends core::Object> extends core::Object {
 abstract class Object&G1^^#T0<#T0 extends core::Object> = core::Object with self::G1<self::Object&G1^^#T0::#T0> {
 }
 class D<S extends core::Object> extends self::Object&G1^^#T0<self::D::S> {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
 }
diff --git a/pkg/front_end/testcases/mixin.dart.outline.expect b/pkg/front_end/testcases/mixin.dart.outline.expect
index 3dc6a7bf420..3d909fc919a 100644
--- a/pkg/front_end/testcases/mixin.dart.outline.expect
+++ b/pkg/front_end/testcases/mixin.dart.outline.expect
@@ -11,13 +11,13 @@ class B extends self::Object&M1&M2 {
     ;
 }
 abstract class M1 extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     ;
   method m() → dynamic
     ;
 }
 abstract class M2 extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     ;
   method m() → dynamic
     ;
@@ -27,7 +27,7 @@ class C extends self::Object&M1&M2 {
     ;
 }
 abstract class G1<T extends core::Object> extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     ;
   method m() → dynamic
     ;
@@ -35,7 +35,7 @@ abstract class G1<T extends core::Object> extends core::Object {
 abstract class Object&G1^^#T0<#T0 extends core::Object> = core::Object with self::G1<self::Object&G1^^#T0::#T0> {
 }
 class D<S extends core::Object> extends self::Object&G1^^#T0<self::D::S> {
-  constructor •() → void
+  default constructor •() → void
     ;
 }
 static method main() → dynamic
diff --git a/pkg/front_end/testcases/named_parameters.dart.outline.expect b/pkg/front_end/testcases/named_parameters.dart.outline.expect
index 7db72904265..31ae8e4c485 100644
--- a/pkg/front_end/testcases/named_parameters.dart.outline.expect
+++ b/pkg/front_end/testcases/named_parameters.dart.outline.expect
@@ -3,7 +3,7 @@ import self as self;
 import "dart:core" as core;
 
 class Superclass extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     ;
   method foo({dynamic alpha, dynamic beta}) → dynamic
     ;
@@ -13,7 +13,7 @@ class Superclass extends core::Object {
     ;
 }
 class Subclass extends self::Superclass {
-  constructor •() → void
+  default constructor •() → void
     ;
   method foo({dynamic beta, dynamic alpha}) → dynamic
     ;
diff --git a/pkg/front_end/testcases/null_aware.dart.direct.expect b/pkg/front_end/testcases/null_aware.dart.direct.expect
index 9a60a6263ef..f85d16d80ec 100644
--- a/pkg/front_end/testcases/null_aware.dart.direct.expect
+++ b/pkg/front_end/testcases/null_aware.dart.direct.expect
@@ -5,7 +5,7 @@ import "dart:core" as core;
 class Foo extends core::Object {
   field core::int field = null;
   static field core::int staticField = null;
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
 }
diff --git a/pkg/front_end/testcases/null_aware.dart.outline.expect b/pkg/front_end/testcases/null_aware.dart.outline.expect
index a61a96fd747..cd828cc4279 100644
--- a/pkg/front_end/testcases/null_aware.dart.outline.expect
+++ b/pkg/front_end/testcases/null_aware.dart.outline.expect
@@ -5,7 +5,7 @@ import "dart:core" as core;
 class Foo extends core::Object {
   field core::int field;
   static field core::int staticField;
-  constructor •() → void
+  default constructor •() → void
     ;
 }
 static method main() → dynamic
diff --git a/pkg/front_end/testcases/null_aware.dart.strong.expect b/pkg/front_end/testcases/null_aware.dart.strong.expect
index 7788c083b18..1f16763d192 100644
--- a/pkg/front_end/testcases/null_aware.dart.strong.expect
+++ b/pkg/front_end/testcases/null_aware.dart.strong.expect
@@ -5,7 +5,7 @@ import "dart:core" as core;
 class Foo extends core::Object {
   field core::int field = null;
   static field core::int staticField = null;
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
 }
diff --git a/pkg/front_end/testcases/operators.dart.direct.expect b/pkg/front_end/testcases/operators.dart.direct.expect
index 993e3d356e9..d2c131d723a 100644
--- a/pkg/front_end/testcases/operators.dart.direct.expect
+++ b/pkg/front_end/testcases/operators.dart.direct.expect
@@ -3,7 +3,7 @@ import self as self;
 import "dart:core" as core;
 
 class Operators extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
   operator +(dynamic other) → dynamic
diff --git a/pkg/front_end/testcases/operators.dart.outline.expect b/pkg/front_end/testcases/operators.dart.outline.expect
index 0269d346705..b068cb5ab50 100644
--- a/pkg/front_end/testcases/operators.dart.outline.expect
+++ b/pkg/front_end/testcases/operators.dart.outline.expect
@@ -3,7 +3,7 @@ import self as self;
 import "dart:core" as core;
 
 class Operators extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     ;
   operator +(dynamic other) → dynamic
     ;
diff --git a/pkg/front_end/testcases/optional.dart.direct.expect b/pkg/front_end/testcases/optional.dart.direct.expect
index 947d12b66a7..972e36562fb 100644
--- a/pkg/front_end/testcases/optional.dart.direct.expect
+++ b/pkg/front_end/testcases/optional.dart.direct.expect
@@ -3,45 +3,45 @@ import self as self;
 import "dart:core" as core;
 
 class Foo extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
-  method method(dynamic x, [dynamic y, dynamic z]) → dynamic {
+  method method(dynamic x, [dynamic y = null, dynamic z = null]) → dynamic {
     return "string";
   }
 }
 abstract class External extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
-  abstract method externalMethod(core::int x, [core::int y, core::int z]) → core::String;
+  abstract method externalMethod(core::int x, [core::int y = null, core::int z = null]) → core::String;
   abstract method listen(self::Listener listener) → void;
 }
 abstract class Listener extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
-  abstract method event(core::String input, [core::int x, core::int y]) → void;
+  abstract method event(core::String input, [core::int x = null, core::int y = null]) → void;
 }
 class TestListener extends self::Listener {
-  constructor •() → void
+  default constructor •() → void
     : super self::Listener::•()
     ;
-  method event(dynamic input, [dynamic x, dynamic y]) → void {}
+  method event(dynamic input, [dynamic x = null, dynamic y = null]) → void {}
 }
 class ExtendedListener extends self::Listener {
-  constructor •() → void
+  default constructor •() → void
     : super self::Listener::•()
     ;
-  method event(dynamic input, [dynamic x, dynamic y, dynamic z]) → void {}
+  method event(dynamic input, [dynamic x = null, dynamic y = null, dynamic z = null]) → void {}
 }
 class InvalidListener extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
-  method event(dynamic input, [dynamic x]) → void {}
+  method event(dynamic input, [dynamic x = null]) → void {}
 }
-external static method createExternal() → self::External;
+external static abstract method createExternal() → self::External;
 static method main() → dynamic {
   dynamic foo = new self::Foo::•();
   dynamic string1 = foo.method(1);
diff --git a/pkg/front_end/testcases/optional.dart.outline.expect b/pkg/front_end/testcases/optional.dart.outline.expect
index caac714b210..1b926ef9c82 100644
--- a/pkg/front_end/testcases/optional.dart.outline.expect
+++ b/pkg/front_end/testcases/optional.dart.outline.expect
@@ -3,36 +3,36 @@ import self as self;
 import "dart:core" as core;
 
 class Foo extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     ;
   method method(dynamic x, [dynamic y, dynamic z]) → dynamic
     ;
 }
 abstract class External extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     ;
   abstract method externalMethod(core::int x, [core::int y, core::int z]) → core::String;
   abstract method listen(self::Listener listener) → void;
 }
 abstract class Listener extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     ;
   abstract method event(core::String input, [core::int x, core::int y]) → void;
 }
 class TestListener extends self::Listener {
-  constructor •() → void
+  default constructor •() → void
     ;
   method event(dynamic input, [dynamic x, dynamic y]) → void
     ;
 }
 class ExtendedListener extends self::Listener {
-  constructor •() → void
+  default constructor •() → void
     ;
   method event(dynamic input, [dynamic x, dynamic y, dynamic z]) → void
     ;
 }
 class InvalidListener extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     ;
   method event(dynamic input, [dynamic x]) → void
     ;
diff --git a/pkg/front_end/testcases/optional.dart.strong.expect b/pkg/front_end/testcases/optional.dart.strong.expect
index bf72af1d1c2..92272170afb 100644
--- a/pkg/front_end/testcases/optional.dart.strong.expect
+++ b/pkg/front_end/testcases/optional.dart.strong.expect
@@ -3,7 +3,7 @@ import self as self;
 import "dart:core" as core;
 
 class Foo extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
   method method(dynamic x, [dynamic y = null, dynamic z = null]) → dynamic {
@@ -11,32 +11,32 @@ class Foo extends core::Object {
   }
 }
 abstract class External extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
   abstract method externalMethod(core::int x, [core::int y = null, core::int z = null]) → core::String;
   abstract method listen(self::Listener listener) → void;
 }
 abstract class Listener extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
   abstract method event(core::String input, [core::int x = null, core::int y = null]) → void;
 }
 class TestListener extends self::Listener {
-  constructor •() → void
+  default constructor •() → void
     : super self::Listener::•()
     ;
-  method event(dynamic input, [dynamic x = null, dynamic y = null]) → void {}
+  method event(core::String input, [core::int x = null, core::int y = null]) → void {}
 }
 class ExtendedListener extends self::Listener {
-  constructor •() → void
+  default constructor •() → void
     : super self::Listener::•()
     ;
-  method event(dynamic input, [dynamic x = null, dynamic y = null, dynamic z = null]) → void {}
+  method event(core::String input, [core::int x = null, core::int y = null, dynamic z = null]) → void {}
 }
 class InvalidListener extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
   method event(dynamic input, [dynamic x = null]) → void {}
diff --git a/pkg/front_end/testcases/override.dart.direct.expect b/pkg/front_end/testcases/override.dart.direct.expect
index c46b18731a3..5448dbe1652 100644
--- a/pkg/front_end/testcases/override.dart.direct.expect
+++ b/pkg/front_end/testcases/override.dart.direct.expect
@@ -3,17 +3,17 @@ import self as self;
 import "dart:core" as core;
 
 class Foo extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
 }
 class Bar extends self::Foo {
-  constructor •() → void
+  default constructor •() → void
     : super self::Foo::•()
     ;
 }
 class Base extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
   method method() → self::Foo {
@@ -21,7 +21,7 @@ class Base extends core::Object {
   }
 }
 class Sub extends self::Base {
-  constructor •() → void
+  default constructor •() → void
     : super self::Base::•()
     ;
   method method() → self::Foo {
diff --git a/pkg/front_end/testcases/override.dart.outline.expect b/pkg/front_end/testcases/override.dart.outline.expect
index 17cdbfcd070..2cd93ccc5d7 100644
--- a/pkg/front_end/testcases/override.dart.outline.expect
+++ b/pkg/front_end/testcases/override.dart.outline.expect
@@ -3,21 +3,21 @@ import self as self;
 import "dart:core" as core;
 
 class Foo extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     ;
 }
 class Bar extends self::Foo {
-  constructor •() → void
+  default constructor •() → void
     ;
 }
 class Base extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     ;
   method method() → self::Foo
     ;
 }
 class Sub extends self::Base {
-  constructor •() → void
+  default constructor •() → void
     ;
   method method() → self::Foo
     ;
diff --git a/pkg/front_end/testcases/override.dart.strong.expect b/pkg/front_end/testcases/override.dart.strong.expect
index 8cdaa4c9236..8c50d094561 100644
--- a/pkg/front_end/testcases/override.dart.strong.expect
+++ b/pkg/front_end/testcases/override.dart.strong.expect
@@ -3,17 +3,17 @@ import self as self;
 import "dart:core" as core;
 
 class Foo extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
 }
 class Bar extends self::Foo {
-  constructor •() → void
+  default constructor •() → void
     : super self::Foo::•()
     ;
 }
 class Base extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
   method method() → self::Foo {
@@ -21,7 +21,7 @@ class Base extends core::Object {
   }
 }
 class Sub extends self::Base {
-  constructor •() → void
+  default constructor •() → void
     : super self::Base::•()
     ;
   method method() → self::Foo {
diff --git a/pkg/front_end/testcases/prefer_baseclass.dart.direct.expect b/pkg/front_end/testcases/prefer_baseclass.dart.direct.expect
index 8e82d3903cc..d65bbe4ee4c 100644
--- a/pkg/front_end/testcases/prefer_baseclass.dart.direct.expect
+++ b/pkg/front_end/testcases/prefer_baseclass.dart.direct.expect
@@ -3,32 +3,32 @@ import self as self;
 import "dart:core" as core;
 
 class A extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
 }
 class B extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
 }
 class AB1 extends self::A implements self::B {
-  constructor •() → void
+  default constructor •() → void
     : super self::A::•()
     ;
 }
 class AB2 extends self::A implements self::B {
-  constructor •() → void
+  default constructor •() → void
     : super self::A::•()
     ;
 }
 class BA1 extends self::B implements self::A {
-  constructor •() → void
+  default constructor •() → void
     : super self::B::•()
     ;
 }
 class BA2 extends self::B implements self::A {
-  constructor •() → void
+  default constructor •() → void
     : super self::B::•()
     ;
 }
diff --git a/pkg/front_end/testcases/prefer_baseclass.dart.outline.expect b/pkg/front_end/testcases/prefer_baseclass.dart.outline.expect
index a5009b2fda6..01d805fc31a 100644
--- a/pkg/front_end/testcases/prefer_baseclass.dart.outline.expect
+++ b/pkg/front_end/testcases/prefer_baseclass.dart.outline.expect
@@ -3,27 +3,27 @@ import self as self;
 import "dart:core" as core;
 
 class A extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     ;
 }
 class B extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     ;
 }
 class AB1 extends self::A implements self::B {
-  constructor •() → void
+  default constructor •() → void
     ;
 }
 class AB2 extends self::A implements self::B {
-  constructor •() → void
+  default constructor •() → void
     ;
 }
 class BA1 extends self::B implements self::A {
-  constructor •() → void
+  default constructor •() → void
     ;
 }
 class BA2 extends self::B implements self::A {
-  constructor •() → void
+  default constructor •() → void
     ;
 }
 static method takeSubclassOfA(dynamic obj) → dynamic
diff --git a/pkg/front_end/testcases/prefer_baseclass.dart.strong.expect b/pkg/front_end/testcases/prefer_baseclass.dart.strong.expect
index 4783efb3bf1..d02c817be41 100644
--- a/pkg/front_end/testcases/prefer_baseclass.dart.strong.expect
+++ b/pkg/front_end/testcases/prefer_baseclass.dart.strong.expect
@@ -3,32 +3,32 @@ import self as self;
 import "dart:core" as core;
 
 abstract class A extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
 }
 abstract class B extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
 }
 class AB1 extends self::A implements self::B {
-  constructor •() → void
+  default constructor •() → void
     : super self::A::•()
     ;
 }
 class AB2 extends self::A implements self::B {
-  constructor •() → void
+  default constructor •() → void
     : super self::A::•()
     ;
 }
 class BA1 extends self::B implements self::A {
-  constructor •() → void
+  default constructor •() → void
     : super self::B::•()
     ;
 }
 class BA2 extends self::B implements self::A {
-  constructor •() → void
+  default constructor •() → void
     : super self::B::•()
     ;
 }
diff --git a/pkg/front_end/testcases/rasta/abstract_constructor.dart.direct.expect b/pkg/front_end/testcases/rasta/abstract_constructor.dart.direct.expect
index fd7296965b2..524e1aee465 100644
--- a/pkg/front_end/testcases/rasta/abstract_constructor.dart.direct.expect
+++ b/pkg/front_end/testcases/rasta/abstract_constructor.dart.direct.expect
@@ -3,7 +3,7 @@ import self as self;
 import "dart:core" as core;
 
 abstract class C extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
 }
diff --git a/pkg/front_end/testcases/rasta/abstract_constructor.dart.outline.expect b/pkg/front_end/testcases/rasta/abstract_constructor.dart.outline.expect
index 4fbe7d2bd44..d2daed84832 100644
--- a/pkg/front_end/testcases/rasta/abstract_constructor.dart.outline.expect
+++ b/pkg/front_end/testcases/rasta/abstract_constructor.dart.outline.expect
@@ -3,7 +3,7 @@ import self as self;
 import "dart:core" as core;
 
 abstract class C extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     ;
 }
 static method main() → dynamic
diff --git a/pkg/front_end/testcases/rasta/bad_default_constructor.dart.direct.expect b/pkg/front_end/testcases/rasta/bad_default_constructor.dart.direct.expect
index 9ef3d02e3d8..aa77144581a 100644
--- a/pkg/front_end/testcases/rasta/bad_default_constructor.dart.direct.expect
+++ b/pkg/front_end/testcases/rasta/bad_default_constructor.dart.direct.expect
@@ -8,7 +8,7 @@ class A extends core::Object {
     ;
 }
 class B extends self::A {
-  constructor •() → self::B
+  default constructor •() → self::B
     : invalid-initializer;
 }
 static method main() → dynamic {
diff --git a/pkg/front_end/testcases/rasta/bad_default_constructor.dart.outline.expect b/pkg/front_end/testcases/rasta/bad_default_constructor.dart.outline.expect
index b6c4bf2132d..d910cd0defc 100644
--- a/pkg/front_end/testcases/rasta/bad_default_constructor.dart.outline.expect
+++ b/pkg/front_end/testcases/rasta/bad_default_constructor.dart.outline.expect
@@ -7,7 +7,7 @@ class A extends core::Object {
     ;
 }
 class B extends self::A {
-  constructor •() → void
+  default constructor •() → void
     ;
 }
 static method main() → dynamic
diff --git a/pkg/front_end/testcases/rasta/cascades.dart.direct.expect b/pkg/front_end/testcases/rasta/cascades.dart.direct.expect
index 8d6f5d10b3f..f3c4f238677 100644
--- a/pkg/front_end/testcases/rasta/cascades.dart.direct.expect
+++ b/pkg/front_end/testcases/rasta/cascades.dart.direct.expect
@@ -3,7 +3,7 @@ import self as self;
 import "dart:core" as core;
 
 class A extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
   method add(dynamic x) → dynamic
diff --git a/pkg/front_end/testcases/rasta/cascades.dart.outline.expect b/pkg/front_end/testcases/rasta/cascades.dart.outline.expect
index 8c76e175b23..f3831039709 100644
--- a/pkg/front_end/testcases/rasta/cascades.dart.outline.expect
+++ b/pkg/front_end/testcases/rasta/cascades.dart.outline.expect
@@ -3,7 +3,7 @@ import self as self;
 import "dart:core" as core;
 
 class A extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     ;
   method add(dynamic x) → dynamic
     ;
diff --git a/pkg/front_end/testcases/rasta/class_hierarchy.dart.direct.expect b/pkg/front_end/testcases/rasta/class_hierarchy.dart.direct.expect
index f8bf7421b7d..e60c91b3145 100644
--- a/pkg/front_end/testcases/rasta/class_hierarchy.dart.direct.expect
+++ b/pkg/front_end/testcases/rasta/class_hierarchy.dart.direct.expect
@@ -3,11 +3,11 @@ import self as self;
 import "dart:core" as core;
 
 class A extends core::Object {
-  constructor •() → self::A
+  default constructor •() → self::A
     : invalid-initializer;
 }
 class B extends core::Object {
-  constructor •() → self::B
+  default constructor •() → self::B
     : invalid-initializer;
 }
 class C extends core::Object {
diff --git a/pkg/front_end/testcases/rasta/class_hierarchy.dart.outline.expect b/pkg/front_end/testcases/rasta/class_hierarchy.dart.outline.expect
index 7a7d62fa399..9aeb27d6118 100644
--- a/pkg/front_end/testcases/rasta/class_hierarchy.dart.outline.expect
+++ b/pkg/front_end/testcases/rasta/class_hierarchy.dart.outline.expect
@@ -3,11 +3,11 @@ import self as self;
 import "dart:core" as core;
 
 class A extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     ;
 }
 class B extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     ;
 }
 class C extends core::Object {
diff --git a/pkg/front_end/testcases/rasta/duplicated_mixin.dart.direct.expect b/pkg/front_end/testcases/rasta/duplicated_mixin.dart.direct.expect
index d1160d5e3dd..56b7784172b 100644
--- a/pkg/front_end/testcases/rasta/duplicated_mixin.dart.direct.expect
+++ b/pkg/front_end/testcases/rasta/duplicated_mixin.dart.direct.expect
@@ -4,7 +4,7 @@ import "dart:core" as core;
 
 class Mixin extends core::Object {
   field dynamic field = null;
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
 }
@@ -21,7 +21,7 @@ abstract class Object&Mixin&Mixin extends self::Object&Mixin implements self::Mi
     ;
 }
 class A extends self::Object&Mixin&Mixin {
-  constructor •() → void
+  default constructor •() → void
     : super self::Object&Mixin&Mixin::•()
     ;
 }
diff --git a/pkg/front_end/testcases/rasta/duplicated_mixin.dart.outline.expect b/pkg/front_end/testcases/rasta/duplicated_mixin.dart.outline.expect
index 1c4d84df864..2f9029cb9c8 100644
--- a/pkg/front_end/testcases/rasta/duplicated_mixin.dart.outline.expect
+++ b/pkg/front_end/testcases/rasta/duplicated_mixin.dart.outline.expect
@@ -4,7 +4,7 @@ import "dart:core" as core;
 
 class Mixin extends core::Object {
   field dynamic field;
-  constructor •() → void
+  default constructor •() → void
     ;
 }
 abstract class Object&Mixin = core::Object with self::Mixin {
@@ -12,6 +12,6 @@ abstract class Object&Mixin = core::Object with self::Mixin {
 abstract class Object&Mixin&Mixin = self::Object&Mixin with self::Mixin {
 }
 class A extends self::Object&Mixin&Mixin {
-  constructor •() → void
+  default constructor •() → void
     ;
 }
diff --git a/pkg/front_end/testcases/rasta/generic_factory.dart.direct.expect b/pkg/front_end/testcases/rasta/generic_factory.dart.direct.expect
index 8aeb2df1c6a..29aea3d2428 100644
--- a/pkg/front_end/testcases/rasta/generic_factory.dart.direct.expect
+++ b/pkg/front_end/testcases/rasta/generic_factory.dart.direct.expect
@@ -3,17 +3,17 @@ import self as self;
 import "dart:core" as core;
 
 class C1 extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
 }
 class C2 extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
 }
 class C3 extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
 }
diff --git a/pkg/front_end/testcases/rasta/generic_factory.dart.outline.expect b/pkg/front_end/testcases/rasta/generic_factory.dart.outline.expect
index a02e017baa3..5da78bb877d 100644
--- a/pkg/front_end/testcases/rasta/generic_factory.dart.outline.expect
+++ b/pkg/front_end/testcases/rasta/generic_factory.dart.outline.expect
@@ -3,15 +3,15 @@ import self as self;
 import "dart:core" as core;
 
 class C1 extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     ;
 }
 class C2 extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     ;
 }
 class C3 extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     ;
 }
 class A<T extends core::Object> extends core::Object {
diff --git a/pkg/front_end/testcases/rasta/issue_000007.dart.direct.expect b/pkg/front_end/testcases/rasta/issue_000007.dart.direct.expect
index 55a0e8d8fd1..39373ca5cbc 100644
--- a/pkg/front_end/testcases/rasta/issue_000007.dart.direct.expect
+++ b/pkg/front_end/testcases/rasta/issue_000007.dart.direct.expect
@@ -3,12 +3,12 @@ import self as self;
 import "dart:core" as core;
 
 class Base extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
 }
 class Mixin extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
   method foo() → dynamic
@@ -17,7 +17,7 @@ class Mixin extends core::Object {
 abstract class Base&Mixin = self::Base with self::Mixin {
 }
 class Sub extends self::Base&Mixin {
-  constructor •() → void
+  default constructor •() → void
     : super self::Base::•()
     ;
 }
diff --git a/pkg/front_end/testcases/rasta/issue_000007.dart.outline.expect b/pkg/front_end/testcases/rasta/issue_000007.dart.outline.expect
index ed5fd1f40f0..d7371d50823 100644
--- a/pkg/front_end/testcases/rasta/issue_000007.dart.outline.expect
+++ b/pkg/front_end/testcases/rasta/issue_000007.dart.outline.expect
@@ -3,11 +3,11 @@ import self as self;
 import "dart:core" as core;
 
 class Base extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     ;
 }
 class Mixin extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     ;
   method foo() → dynamic
     ;
@@ -15,7 +15,7 @@ class Mixin extends core::Object {
 abstract class Base&Mixin = self::Base with self::Mixin {
 }
 class Sub extends self::Base&Mixin {
-  constructor •() → void
+  default constructor •() → void
     ;
 }
 static method main() → dynamic
diff --git a/pkg/front_end/testcases/rasta/issue_000012.dart.direct.expect b/pkg/front_end/testcases/rasta/issue_000012.dart.direct.expect
index 0a04623ec29..0a844a92d53 100644
--- a/pkg/front_end/testcases/rasta/issue_000012.dart.direct.expect
+++ b/pkg/front_end/testcases/rasta/issue_000012.dart.direct.expect
@@ -4,12 +4,12 @@ import "dart:core" as core;
 
 class A extends core::Object {
   field dynamic field = null;
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
 }
 class B extends self::A {
-  constructor •() → void
+  default constructor •() → void
     : super self::A::•()
     ;
   method m() → dynamic {
diff --git a/pkg/front_end/testcases/rasta/issue_000012.dart.outline.expect b/pkg/front_end/testcases/rasta/issue_000012.dart.outline.expect
index 9fc0897d55f..600adfa9d79 100644
--- a/pkg/front_end/testcases/rasta/issue_000012.dart.outline.expect
+++ b/pkg/front_end/testcases/rasta/issue_000012.dart.outline.expect
@@ -4,11 +4,11 @@ import "dart:core" as core;
 
 class A extends core::Object {
   field dynamic field;
-  constructor •() → void
+  default constructor •() → void
     ;
 }
 class B extends self::A {
-  constructor •() → void
+  default constructor •() → void
     ;
   method m() → dynamic
     ;
diff --git a/pkg/front_end/testcases/rasta/issue_000026.dart.direct.expect b/pkg/front_end/testcases/rasta/issue_000026.dart.direct.expect
index 1f96e95610c..3c0789e6e30 100644
--- a/pkg/front_end/testcases/rasta/issue_000026.dart.direct.expect
+++ b/pkg/front_end/testcases/rasta/issue_000026.dart.direct.expect
@@ -6,7 +6,7 @@ class C extends core::Object {
   field dynamic a = null;
   field dynamic b = 0;
   field dynamic c = 1.+(2);
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
 }
diff --git a/pkg/front_end/testcases/rasta/issue_000026.dart.outline.expect b/pkg/front_end/testcases/rasta/issue_000026.dart.outline.expect
index 2dd409d2101..fbdcf92a8e8 100644
--- a/pkg/front_end/testcases/rasta/issue_000026.dart.outline.expect
+++ b/pkg/front_end/testcases/rasta/issue_000026.dart.outline.expect
@@ -6,7 +6,7 @@ class C extends core::Object {
   field dynamic a;
   field dynamic b;
   field dynamic c;
-  constructor •() → void
+  default constructor •() → void
     ;
 }
 class D extends core::Object {
diff --git a/pkg/front_end/testcases/rasta/issue_000035.dart.direct.expect b/pkg/front_end/testcases/rasta/issue_000035.dart.direct.expect
index 57cf9380a2b..49f48a897d3 100644
--- a/pkg/front_end/testcases/rasta/issue_000035.dart.direct.expect
+++ b/pkg/front_end/testcases/rasta/issue_000035.dart.direct.expect
@@ -3,7 +3,7 @@ import self as self;
 import "dart:core" as core;
 
 class C extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
   abstract method æøC() → dynamic;
diff --git a/pkg/front_end/testcases/rasta/issue_000035.dart.outline.expect b/pkg/front_end/testcases/rasta/issue_000035.dart.outline.expect
index 1098645e92a..3b792394639 100644
--- a/pkg/front_end/testcases/rasta/issue_000035.dart.outline.expect
+++ b/pkg/front_end/testcases/rasta/issue_000035.dart.outline.expect
@@ -3,7 +3,7 @@ import self as self;
 import "dart:core" as core;
 
 class C extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     ;
   abstract method æøC() → dynamic;
 }
diff --git a/pkg/front_end/testcases/rasta/issue_000039.dart.direct.expect b/pkg/front_end/testcases/rasta/issue_000039.dart.direct.expect
index 116a7218bf6..4772ac80575 100644
--- a/pkg/front_end/testcases/rasta/issue_000039.dart.direct.expect
+++ b/pkg/front_end/testcases/rasta/issue_000039.dart.direct.expect
@@ -8,6 +8,6 @@ class A extends core::Object {
     : invalid-initializer;
 }
 class B extends self::A {
-  constructor •() → self::B
+  default constructor •() → self::B
     : super self::A::•();
 }
diff --git a/pkg/front_end/testcases/rasta/issue_000039.dart.outline.expect b/pkg/front_end/testcases/rasta/issue_000039.dart.outline.expect
index 331f7e8b7b7..7eaf284059d 100644
--- a/pkg/front_end/testcases/rasta/issue_000039.dart.outline.expect
+++ b/pkg/front_end/testcases/rasta/issue_000039.dart.outline.expect
@@ -8,6 +8,6 @@ class A extends core::Object {
     ;
 }
 class B extends self::A {
-  constructor •() → void
+  default constructor •() → void
     ;
 }
diff --git a/pkg/front_end/testcases/rasta/issue_000041.dart.direct.expect b/pkg/front_end/testcases/rasta/issue_000041.dart.direct.expect
index 9a674a0fe3c..f763c2edbab 100644
--- a/pkg/front_end/testcases/rasta/issue_000041.dart.direct.expect
+++ b/pkg/front_end/testcases/rasta/issue_000041.dart.direct.expect
@@ -3,7 +3,7 @@ import self as self;
 import "dart:core" as core;
 
 class C extends core::Object {
-  constructor •() → self::C
+  default constructor •() → self::C
     : super core::Object::•();
   method test() → dynamic {
     self::use(invalid-expression);
diff --git a/pkg/front_end/testcases/rasta/issue_000041.dart.outline.expect b/pkg/front_end/testcases/rasta/issue_000041.dart.outline.expect
index d1fde5aef67..36ede251488 100644
--- a/pkg/front_end/testcases/rasta/issue_000041.dart.outline.expect
+++ b/pkg/front_end/testcases/rasta/issue_000041.dart.outline.expect
@@ -3,7 +3,7 @@ import self as self;
 import "dart:core" as core;
 
 class C extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     ;
   method test() → dynamic
     ;
diff --git a/pkg/front_end/testcases/rasta/issue_000043.dart.direct.expect b/pkg/front_end/testcases/rasta/issue_000043.dart.direct.expect
index 44eaf8121dd..e72b4268b15 100644
--- a/pkg/front_end/testcases/rasta/issue_000043.dart.direct.expect
+++ b/pkg/front_end/testcases/rasta/issue_000043.dart.direct.expect
@@ -3,7 +3,7 @@ import self as self;
 import "dart:core" as core;
 
 class C extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
   get x() → dynamic
diff --git a/pkg/front_end/testcases/rasta/issue_000043.dart.outline.expect b/pkg/front_end/testcases/rasta/issue_000043.dart.outline.expect
index 771eec347f3..287561ea626 100644
--- a/pkg/front_end/testcases/rasta/issue_000043.dart.outline.expect
+++ b/pkg/front_end/testcases/rasta/issue_000043.dart.outline.expect
@@ -3,7 +3,7 @@ import self as self;
 import "dart:core" as core;
 
 class C extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     ;
   get x() → dynamic
     ;
diff --git a/pkg/front_end/testcases/rasta/issue_000048.dart.direct.expect b/pkg/front_end/testcases/rasta/issue_000048.dart.direct.expect
index 8731130834b..6e579c85e73 100644
--- a/pkg/front_end/testcases/rasta/issue_000048.dart.direct.expect
+++ b/pkg/front_end/testcases/rasta/issue_000048.dart.direct.expect
@@ -11,7 +11,7 @@ class A extends core::Object {
 }
 class M1 extends core::Object {
   field core::num v2 = 0;
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
 }
diff --git a/pkg/front_end/testcases/rasta/issue_000048.dart.outline.expect b/pkg/front_end/testcases/rasta/issue_000048.dart.outline.expect
index a7bda3a80dd..8a097351906 100644
--- a/pkg/front_end/testcases/rasta/issue_000048.dart.outline.expect
+++ b/pkg/front_end/testcases/rasta/issue_000048.dart.outline.expect
@@ -10,7 +10,7 @@ class A extends core::Object {
 }
 class M1 extends core::Object {
   field core::num v2;
-  constructor •() → void
+  default constructor •() → void
     ;
 }
 class C = self::A with self::M1 {
diff --git a/pkg/front_end/testcases/rasta/issue_000053.dart.direct.expect b/pkg/front_end/testcases/rasta/issue_000053.dart.direct.expect
index 985da53a699..86f1aa19c30 100644
--- a/pkg/front_end/testcases/rasta/issue_000053.dart.direct.expect
+++ b/pkg/front_end/testcases/rasta/issue_000053.dart.direct.expect
@@ -3,7 +3,7 @@ import self as self;
 import "dart:core" as core;
 
 class C extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
   operator ==(dynamic other) → dynamic
diff --git a/pkg/front_end/testcases/rasta/issue_000053.dart.outline.expect b/pkg/front_end/testcases/rasta/issue_000053.dart.outline.expect
index 8c78f4313d7..b3acddc9c16 100644
--- a/pkg/front_end/testcases/rasta/issue_000053.dart.outline.expect
+++ b/pkg/front_end/testcases/rasta/issue_000053.dart.outline.expect
@@ -3,7 +3,7 @@ import self as self;
 import "dart:core" as core;
 
 class C extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     ;
   operator ==(dynamic other) → dynamic
     ;
diff --git a/pkg/front_end/testcases/rasta/issue_000067.dart.direct.expect b/pkg/front_end/testcases/rasta/issue_000067.dart.direct.expect
index cabfbbbdd25..85a69c19fdd 100644
--- a/pkg/front_end/testcases/rasta/issue_000067.dart.direct.expect
+++ b/pkg/front_end/testcases/rasta/issue_000067.dart.direct.expect
@@ -22,7 +22,7 @@ class C extends self::A {
   }
 }
 class D extends self::C {
-  constructor •() → void
+  default constructor •() → void
     : super self::C::•()
     ;
   method m() → core::int {
diff --git a/pkg/front_end/testcases/rasta/issue_000067.dart.outline.expect b/pkg/front_end/testcases/rasta/issue_000067.dart.outline.expect
index 4c0e08325ec..d645fee94f5 100644
--- a/pkg/front_end/testcases/rasta/issue_000067.dart.outline.expect
+++ b/pkg/front_end/testcases/rasta/issue_000067.dart.outline.expect
@@ -21,7 +21,7 @@ class C extends self::A {
     ;
 }
 class D extends self::C {
-  constructor •() → void
+  default constructor •() → void
     ;
   method m() → core::int
     ;
diff --git a/pkg/front_end/testcases/rasta/issue_000068.dart.direct.expect b/pkg/front_end/testcases/rasta/issue_000068.dart.direct.expect
index b66e51d771d..cfe6ec7217d 100644
--- a/pkg/front_end/testcases/rasta/issue_000068.dart.direct.expect
+++ b/pkg/front_end/testcases/rasta/issue_000068.dart.direct.expect
@@ -4,22 +4,22 @@ import "dart:core" as core;
 import "package:expect/expect.dart" as exp;
 
 class G<T extends core::Object> extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
 }
 class A extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
 }
 class B extends self::A {
-  constructor •() → void
+  default constructor •() → void
     : super self::A::•()
     ;
 }
 class C extends self::B {
-  constructor •() → void
+  default constructor •() → void
     : super self::B::•()
     ;
 }
diff --git a/pkg/front_end/testcases/rasta/issue_000068.dart.outline.expect b/pkg/front_end/testcases/rasta/issue_000068.dart.outline.expect
index af7d585acb9..08bd936a4e3 100644
--- a/pkg/front_end/testcases/rasta/issue_000068.dart.outline.expect
+++ b/pkg/front_end/testcases/rasta/issue_000068.dart.outline.expect
@@ -3,19 +3,19 @@ import self as self;
 import "dart:core" as core;
 
 class G<T extends core::Object> extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     ;
 }
 class A extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     ;
 }
 class B extends self::A {
-  constructor •() → void
+  default constructor •() → void
     ;
 }
 class C extends self::B {
-  constructor •() → void
+  default constructor •() → void
     ;
 }
 static method main() → dynamic
diff --git a/pkg/front_end/testcases/rasta/issue_000070.dart.direct.expect b/pkg/front_end/testcases/rasta/issue_000070.dart.direct.expect
index d1530e88387..031b52afce8 100644
--- a/pkg/front_end/testcases/rasta/issue_000070.dart.direct.expect
+++ b/pkg/front_end/testcases/rasta/issue_000070.dart.direct.expect
@@ -25,12 +25,12 @@ class A<N extends core::Object, S extends core::Object, U extends core::Object>
   set setter(self::A::S s) → void {}
 }
 abstract class J<Aa extends core::Object, B extends core::Object> extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
 }
 abstract class I<H extends core::Object, C extends core::Object, K extends core::Object> extends self::J<self::I::C, self::I::K> {
-  constructor •() → void
+  default constructor •() → void
     : super self::J::•()
     ;
 }
diff --git a/pkg/front_end/testcases/rasta/issue_000070.dart.outline.expect b/pkg/front_end/testcases/rasta/issue_000070.dart.outline.expect
index 455f514611f..1553d9c44f3 100644
--- a/pkg/front_end/testcases/rasta/issue_000070.dart.outline.expect
+++ b/pkg/front_end/testcases/rasta/issue_000070.dart.outline.expect
@@ -18,11 +18,11 @@ class A<N extends core::Object, S extends core::Object, U extends core::Object>
     ;
 }
 abstract class J<Aa extends core::Object, B extends core::Object> extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     ;
 }
 abstract class I<H extends core::Object, C extends core::Object, K extends core::Object> extends self::J<self::I::C, self::I::K> {
-  constructor •() → void
+  default constructor •() → void
     ;
 }
 static method main() → dynamic
diff --git a/pkg/front_end/testcases/rasta/issue_000080.dart.direct.expect b/pkg/front_end/testcases/rasta/issue_000080.dart.direct.expect
index 5f8a44ea00f..85e3e6af181 100644
--- a/pkg/front_end/testcases/rasta/issue_000080.dart.direct.expect
+++ b/pkg/front_end/testcases/rasta/issue_000080.dart.direct.expect
@@ -4,7 +4,7 @@ import "dart:core" as core;
 
 class Mixin extends core::Object {
   field dynamic field = null;
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
   method foo() → dynamic
@@ -13,7 +13,7 @@ class Mixin extends core::Object {
 abstract class Object&Mixin = core::Object with self::Mixin {
 }
 class Foo extends self::Object&Mixin {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
   method foo() → dynamic
diff --git a/pkg/front_end/testcases/rasta/issue_000080.dart.outline.expect b/pkg/front_end/testcases/rasta/issue_000080.dart.outline.expect
index 585c3d5e0bb..e9fe72d834e 100644
--- a/pkg/front_end/testcases/rasta/issue_000080.dart.outline.expect
+++ b/pkg/front_end/testcases/rasta/issue_000080.dart.outline.expect
@@ -4,7 +4,7 @@ import "dart:core" as core;
 
 class Mixin extends core::Object {
   field dynamic field;
-  constructor •() → void
+  default constructor •() → void
     ;
   method foo() → dynamic
     ;
@@ -12,7 +12,7 @@ class Mixin extends core::Object {
 abstract class Object&Mixin = core::Object with self::Mixin {
 }
 class Foo extends self::Object&Mixin {
-  constructor •() → void
+  default constructor •() → void
     ;
   method foo() → dynamic
     ;
diff --git a/pkg/front_end/testcases/rasta/issue_000081.dart.direct.expect b/pkg/front_end/testcases/rasta/issue_000081.dart.direct.expect
index 2ed2e94292e..36917883fd1 100644
--- a/pkg/front_end/testcases/rasta/issue_000081.dart.direct.expect
+++ b/pkg/front_end/testcases/rasta/issue_000081.dart.direct.expect
@@ -4,13 +4,13 @@ import "dart:core" as core;
 
 class Base extends core::Object {
   field core::int hashCode = 42;
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
 }
 class Sub extends self::Base {
   field core::int _hashCode = null;
-  constructor •() → void
+  default constructor •() → void
     : super self::Base::•()
     ;
   get hashCode() → dynamic
diff --git a/pkg/front_end/testcases/rasta/issue_000081.dart.outline.expect b/pkg/front_end/testcases/rasta/issue_000081.dart.outline.expect
index 0ad6433fe07..246e0c779db 100644
--- a/pkg/front_end/testcases/rasta/issue_000081.dart.outline.expect
+++ b/pkg/front_end/testcases/rasta/issue_000081.dart.outline.expect
@@ -4,12 +4,12 @@ import "dart:core" as core;
 
 class Base extends core::Object {
   field core::int hashCode;
-  constructor •() → void
+  default constructor •() → void
     ;
 }
 class Sub extends self::Base {
   field core::int _hashCode;
-  constructor •() → void
+  default constructor •() → void
     ;
   get hashCode() → dynamic
     ;
diff --git a/pkg/front_end/testcases/rasta/mixin_library.dart.direct.expect b/pkg/front_end/testcases/rasta/mixin_library.dart.direct.expect
index b3165e59bb3..3011465cc3d 100644
--- a/pkg/front_end/testcases/rasta/mixin_library.dart.direct.expect
+++ b/pkg/front_end/testcases/rasta/mixin_library.dart.direct.expect
@@ -7,7 +7,7 @@ class Mixin<T extends core::Object> extends core::Object {
   field dynamic y = null;
   field dynamic z = null;
   field self::Mixin::T t = null;
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
   method foo() → dynamic
diff --git a/pkg/front_end/testcases/rasta/mixin_library.dart.outline.expect b/pkg/front_end/testcases/rasta/mixin_library.dart.outline.expect
index 18b80ce96fa..caa5a96c952 100644
--- a/pkg/front_end/testcases/rasta/mixin_library.dart.outline.expect
+++ b/pkg/front_end/testcases/rasta/mixin_library.dart.outline.expect
@@ -7,7 +7,7 @@ class Mixin<T extends core::Object> extends core::Object {
   field dynamic y;
   field dynamic z;
   field self::Mixin::T t;
-  constructor •() → void
+  default constructor •() → void
     ;
   method foo() → dynamic
     ;
diff --git a/pkg/front_end/testcases/rasta/mixin_library.dart.strong.expect b/pkg/front_end/testcases/rasta/mixin_library.dart.strong.expect
index 4226a2e563d..93eeff9a800 100644
--- a/pkg/front_end/testcases/rasta/mixin_library.dart.strong.expect
+++ b/pkg/front_end/testcases/rasta/mixin_library.dart.strong.expect
@@ -7,7 +7,7 @@ class Mixin<T extends core::Object> extends core::Object {
   field dynamic y = null;
   field dynamic z = null;
   field self::Mixin::T t = null;
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
   method foo() → dynamic
diff --git a/pkg/front_end/testcases/rasta/static.dart.direct.expect b/pkg/front_end/testcases/rasta/static.dart.direct.expect
index ba215db7cd7..6fc55d9dad2 100644
--- a/pkg/front_end/testcases/rasta/static.dart.direct.expect
+++ b/pkg/front_end/testcases/rasta/static.dart.direct.expect
@@ -5,7 +5,7 @@ import "dart:core" as core;
 class Foo extends core::Object {
   static const field dynamic staticConstant = 42;
   static field dynamic staticField = 42;
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
   static method staticFunction() → dynamic {}
diff --git a/pkg/front_end/testcases/rasta/static.dart.outline.expect b/pkg/front_end/testcases/rasta/static.dart.outline.expect
index 3f3156b4e56..7296eed222d 100644
--- a/pkg/front_end/testcases/rasta/static.dart.outline.expect
+++ b/pkg/front_end/testcases/rasta/static.dart.outline.expect
@@ -5,7 +5,7 @@ import "dart:core" as core;
 class Foo extends core::Object {
   static const field dynamic staticConstant;
   static field dynamic staticField;
-  constructor •() → void
+  default constructor •() → void
     ;
   static method staticFunction() → dynamic
     ;
diff --git a/pkg/front_end/testcases/rasta/super.dart.direct.expect b/pkg/front_end/testcases/rasta/super.dart.direct.expect
index f7259312a99..b891a380f58 100644
--- a/pkg/front_end/testcases/rasta/super.dart.direct.expect
+++ b/pkg/front_end/testcases/rasta/super.dart.direct.expect
@@ -8,7 +8,7 @@ class A extends core::Object {
   field dynamic c;
   field dynamic d;
   final field dynamic f;
-  constructor •() → self::A
+  default constructor •() → self::A
     : super core::Object::•();
   get e() → dynamic
     return null;
@@ -33,7 +33,7 @@ class A extends core::Object {
 }
 class B extends self::A {
   final field dynamic d;
-  constructor •() → self::B
+  default constructor •() → self::B
     : super self::A::•();
   get b() → dynamic
     return null;
@@ -41,7 +41,7 @@ class B extends self::A {
   set i(dynamic x) → dynamic {}
 }
 class C extends self::B {
-  constructor •() → self::C
+  default constructor •() → self::C
     : super self::B::•();
   method test() → dynamic {
     super.{self::A::~}();
diff --git a/pkg/front_end/testcases/rasta/super.dart.outline.expect b/pkg/front_end/testcases/rasta/super.dart.outline.expect
index 6e83919105b..809f633f782 100644
--- a/pkg/front_end/testcases/rasta/super.dart.outline.expect
+++ b/pkg/front_end/testcases/rasta/super.dart.outline.expect
@@ -8,7 +8,7 @@ class A extends core::Object {
   field dynamic c;
   field dynamic d;
   final field dynamic f;
-  constructor •() → void
+  default constructor •() → void
     ;
   get e() → dynamic
     ;
@@ -39,7 +39,7 @@ class A extends core::Object {
 }
 class B extends self::A {
   final field dynamic d;
-  constructor •() → void
+  default constructor •() → void
     ;
   get b() → dynamic
     ;
@@ -49,7 +49,7 @@ class B extends self::A {
     ;
 }
 class C extends self::B {
-  constructor •() → void
+  default constructor •() → void
     ;
   method test() → dynamic
     ;
diff --git a/pkg/front_end/testcases/rasta/super.dart.strong.expect b/pkg/front_end/testcases/rasta/super.dart.strong.expect
index 528b38b08e5..820f5ed5320 100644
--- a/pkg/front_end/testcases/rasta/super.dart.strong.expect
+++ b/pkg/front_end/testcases/rasta/super.dart.strong.expect
@@ -8,7 +8,7 @@ class A extends core::Object {
   field dynamic c = null;
   field dynamic d = null;
   final field dynamic f = null;
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
   get e() → dynamic
@@ -34,7 +34,7 @@ class A extends core::Object {
 }
 class B extends self::A {
   final field dynamic d = null;
-  constructor •() → void
+  default constructor •() → void
     : super self::A::•()
     ;
   get b() → dynamic
@@ -43,7 +43,7 @@ class B extends self::A {
   set i(dynamic x) → void {}
 }
 class C extends self::B {
-  constructor •() → void
+  default constructor •() → void
     : super self::B::•()
     ;
   method test() → dynamic {
diff --git a/pkg/front_end/testcases/rasta/super_mixin.dart.strong.expect b/pkg/front_end/testcases/rasta/super_mixin.dart.strong.expect
index c208cde422e..aadd5df51c0 100644
--- a/pkg/front_end/testcases/rasta/super_mixin.dart.strong.expect
+++ b/pkg/front_end/testcases/rasta/super_mixin.dart.strong.expect
@@ -4,7 +4,7 @@ import "dart:core" as core;
 import "./mixin_library.dart" as mix;
 
 class Super<S extends core::Object> extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
   method foo() → dynamic
@@ -15,14 +15,14 @@ class Super<S extends core::Object> extends core::Object {
 abstract class Super&Mixin^#T0^#T0<#T0 extends core::Object> = self::Super<self::Super&Mixin^#T0^#T0::#T0> with mix::Mixin<self::Super&Mixin^#T0^#T0::#T0> {
 }
 class C<V extends core::Object> extends self::Super&Mixin^#T0^#T0<self::C::V> {
-  constructor •() → void
+  default constructor •() → void
     : super self::Super::•()
     ;
 }
 abstract class Super&Mixin = self::Super<dynamic> with mix::Mixin<dynamic> {
 }
 class D extends self::Super&Mixin {
-  constructor •() → void
+  default constructor •() → void
     : super self::Super::•()
     ;
 }
diff --git a/pkg/front_end/testcases/rasta/super_operator.dart.direct.expect b/pkg/front_end/testcases/rasta/super_operator.dart.direct.expect
index 24c3403a11f..18fdad19449 100644
--- a/pkg/front_end/testcases/rasta/super_operator.dart.direct.expect
+++ b/pkg/front_end/testcases/rasta/super_operator.dart.direct.expect
@@ -3,7 +3,7 @@ import self as self;
 import "dart:core" as core;
 
 class A extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
   operator +(core::String s) → dynamic
@@ -13,7 +13,7 @@ class A extends core::Object {
   operator []=(dynamic i, dynamic val) → dynamic {}
 }
 class B extends self::A {
-  constructor •() → void
+  default constructor •() → void
     : super self::A::•()
     ;
   operator +(core::String s) → dynamic
@@ -24,7 +24,7 @@ class B extends self::A {
     return let final dynamic #t1 = let final dynamic #t2 = i in let final dynamic #t3 = i = #t2.+(1) in #t2 in let final dynamic #t4 = this.{=self::A::[]}(#t1).+(val) in let final dynamic #t5 = this.{=self::A::[]=}(#t1, #t4) in #t4;
 }
 class Autobianchi extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
   method g() → dynamic
diff --git a/pkg/front_end/testcases/rasta/super_operator.dart.outline.expect b/pkg/front_end/testcases/rasta/super_operator.dart.outline.expect
index 5a886e153cc..02aacd7ce9b 100644
--- a/pkg/front_end/testcases/rasta/super_operator.dart.outline.expect
+++ b/pkg/front_end/testcases/rasta/super_operator.dart.outline.expect
@@ -3,7 +3,7 @@ import self as self;
 import "dart:core" as core;
 
 class A extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     ;
   operator +(core::String s) → dynamic
     ;
@@ -13,7 +13,7 @@ class A extends core::Object {
     ;
 }
 class B extends self::A {
-  constructor •() → void
+  default constructor •() → void
     ;
   operator +(core::String s) → dynamic
     ;
@@ -23,7 +23,7 @@ class B extends self::A {
     ;
 }
 class Autobianchi extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     ;
   method g() → dynamic
     ;
diff --git a/pkg/front_end/testcases/rasta/this_invoke.dart.direct.expect b/pkg/front_end/testcases/rasta/this_invoke.dart.direct.expect
index b366a22c56a..a30a24da8b3 100644
--- a/pkg/front_end/testcases/rasta/this_invoke.dart.direct.expect
+++ b/pkg/front_end/testcases/rasta/this_invoke.dart.direct.expect
@@ -3,7 +3,7 @@ import self as self;
 import "dart:core" as core;
 
 class C extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
   method m(dynamic x) → dynamic
diff --git a/pkg/front_end/testcases/rasta/this_invoke.dart.outline.expect b/pkg/front_end/testcases/rasta/this_invoke.dart.outline.expect
index b77f8168329..7076ca89224 100644
--- a/pkg/front_end/testcases/rasta/this_invoke.dart.outline.expect
+++ b/pkg/front_end/testcases/rasta/this_invoke.dart.outline.expect
@@ -3,7 +3,7 @@ import self as self;
 import "dart:core" as core;
 
 class C extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     ;
   method m(dynamic x) → dynamic
     ;
diff --git a/pkg/front_end/testcases/rasta/type_literals.dart.direct.expect b/pkg/front_end/testcases/rasta/type_literals.dart.direct.expect
index 2e16f2d3c43..ac838dbe203 100644
--- a/pkg/front_end/testcases/rasta/type_literals.dart.direct.expect
+++ b/pkg/front_end/testcases/rasta/type_literals.dart.direct.expect
@@ -4,7 +4,7 @@ import "dart:core" as core;
 
 typedef Func = () → void;
 class C<T extends core::Object> extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
   method test() → dynamic {
diff --git a/pkg/front_end/testcases/rasta/type_literals.dart.outline.expect b/pkg/front_end/testcases/rasta/type_literals.dart.outline.expect
index f3f456bc59a..da9fa816bae 100644
--- a/pkg/front_end/testcases/rasta/type_literals.dart.outline.expect
+++ b/pkg/front_end/testcases/rasta/type_literals.dart.outline.expect
@@ -4,7 +4,7 @@ import "dart:core" as core;
 
 typedef Func = () → void;
 class C<T extends core::Object> extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     ;
   method test() → dynamic
     ;
diff --git a/pkg/front_end/testcases/rasta/unresolved_for_in.dart.direct.expect b/pkg/front_end/testcases/rasta/unresolved_for_in.dart.direct.expect
index f0d4c360180..6c1bda703d8 100644
--- a/pkg/front_end/testcases/rasta/unresolved_for_in.dart.direct.expect
+++ b/pkg/front_end/testcases/rasta/unresolved_for_in.dart.direct.expect
@@ -3,7 +3,7 @@ import self as self;
 import "dart:core" as core;
 
 class Fisk extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
   method it1(dynamic x) → dynamic {
diff --git a/pkg/front_end/testcases/rasta/unresolved_for_in.dart.outline.expect b/pkg/front_end/testcases/rasta/unresolved_for_in.dart.outline.expect
index eff4b822c18..f3859204877 100644
--- a/pkg/front_end/testcases/rasta/unresolved_for_in.dart.outline.expect
+++ b/pkg/front_end/testcases/rasta/unresolved_for_in.dart.outline.expect
@@ -4,7 +4,7 @@ import "dart:core" as core;
 
 typedef VoidFunction = () → void;
 class Fisk extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     ;
   method it1(dynamic x) → dynamic
     ;
diff --git a/pkg/front_end/testcases/rasta/unresolved_recovery.dart.direct.expect b/pkg/front_end/testcases/rasta/unresolved_recovery.dart.direct.expect
index 4e649451302..85c8a96662f 100644
--- a/pkg/front_end/testcases/rasta/unresolved_recovery.dart.direct.expect
+++ b/pkg/front_end/testcases/rasta/unresolved_recovery.dart.direct.expect
@@ -3,7 +3,7 @@ import self as self;
 import "dart:core" as core;
 
 class E extends core::Object {
-  constructor •() → self::E
+  default constructor •() → self::E
     : super core::Object::•();
   method foo() → dynamic {
     super.[]=(4, 42);
diff --git a/pkg/front_end/testcases/rasta/unresolved_recovery.dart.outline.expect b/pkg/front_end/testcases/rasta/unresolved_recovery.dart.outline.expect
index 36d86b3dfe7..f2553f40d1c 100644
--- a/pkg/front_end/testcases/rasta/unresolved_recovery.dart.outline.expect
+++ b/pkg/front_end/testcases/rasta/unresolved_recovery.dart.outline.expect
@@ -3,7 +3,7 @@ import self as self;
 import "dart:core" as core;
 
 class E extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     ;
   method foo() → dynamic
     ;
diff --git a/pkg/front_end/testcases/redirecting_constructor.dart.direct.expect b/pkg/front_end/testcases/redirecting_constructor.dart.direct.expect
index 965bce7f3b4..1812657d787 100644
--- a/pkg/front_end/testcases/redirecting_constructor.dart.direct.expect
+++ b/pkg/front_end/testcases/redirecting_constructor.dart.direct.expect
@@ -11,7 +11,7 @@ class A extends core::Object {
     let dynamic #redirecting_factory = self::B::• in invalid-expression;
 }
 class B extends self::A {
-  constructor •() → void
+  default constructor •() → void
     : super self::A::•()
     ;
 }
diff --git a/pkg/front_end/testcases/redirecting_constructor.dart.outline.expect b/pkg/front_end/testcases/redirecting_constructor.dart.outline.expect
index 37eac0cb2ff..18a6649a6b4 100644
--- a/pkg/front_end/testcases/redirecting_constructor.dart.outline.expect
+++ b/pkg/front_end/testcases/redirecting_constructor.dart.outline.expect
@@ -10,7 +10,7 @@ class A extends core::Object {
     let dynamic #redirecting_factory = self::B::• in invalid-expression;
 }
 class B extends self::A {
-  constructor •() → void
+  default constructor •() → void
     ;
 }
 static method main() → dynamic
diff --git a/pkg/front_end/testcases/redirecting_factory.dart.outline.expect b/pkg/front_end/testcases/redirecting_factory.dart.outline.expect
index 88ef2c77e1f..3f266d376fe 100644
--- a/pkg/front_end/testcases/redirecting_factory.dart.outline.expect
+++ b/pkg/front_end/testcases/redirecting_factory.dart.outline.expect
@@ -19,7 +19,7 @@ class Bar<Sb extends core::Object, Tb extends core::Object> extends core::Object
     ;
 }
 class Builder<X extends core::Object> extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     ;
   method method() → dynamic
     ;
@@ -35,15 +35,15 @@ class SimpleCaseImpl<Ai extends core::Object, Bi extends core::Object> extends c
     let dynamic #redirecting_factory = self::SimpleCaseImpl2::• in invalid-expression;
 }
 class SimpleCaseImpl2<Ai2 extends core::Object, Bi2 extends core::Object> extends core::Object implements self::SimpleCaseImpl<self::SimpleCaseImpl2::Ai2, self::SimpleCaseImpl2::Bi2> {
-  constructor •() → void
+  default constructor •() → void
     ;
 }
 class Base<M extends core::Object> extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     ;
 }
 class Mixin<M extends core::Object> extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     ;
 }
 class Mix<M extends core::Object> = self::Base<self::Mix::M> with self::Mixin<self::Mix::M> {
diff --git a/pkg/front_end/testcases/regress/issue_29981.dart.outline.expect b/pkg/front_end/testcases/regress/issue_29981.dart.outline.expect
index baed3e540af..ee8d2394033 100644
--- a/pkg/front_end/testcases/regress/issue_29981.dart.outline.expect
+++ b/pkg/front_end/testcases/regress/issue_29981.dart.outline.expect
@@ -4,7 +4,7 @@ import "dart:core" as core;
 
 class C<T extends core::Object> extends core::Object {
   field self::C<core::String> field;
-  constructor •() → void
+  default constructor •() → void
     ;
 }
 static method main() → dynamic
diff --git a/pkg/front_end/testcases/static_setter.dart.direct.expect b/pkg/front_end/testcases/static_setter.dart.direct.expect
index af6242fe043..1163764ade0 100644
--- a/pkg/front_end/testcases/static_setter.dart.direct.expect
+++ b/pkg/front_end/testcases/static_setter.dart.direct.expect
@@ -3,7 +3,7 @@ import self as self;
 import "dart:core" as core;
 
 class Foo extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
 }
diff --git a/pkg/front_end/testcases/static_setter.dart.outline.expect b/pkg/front_end/testcases/static_setter.dart.outline.expect
index f789e0d9da2..061c6a7328b 100644
--- a/pkg/front_end/testcases/static_setter.dart.outline.expect
+++ b/pkg/front_end/testcases/static_setter.dart.outline.expect
@@ -3,7 +3,7 @@ import self as self;
 import "dart:core" as core;
 
 class Foo extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     ;
 }
 static set foo(dynamic x) → dynamic
diff --git a/pkg/front_end/testcases/static_setter.dart.strong.expect b/pkg/front_end/testcases/static_setter.dart.strong.expect
index af6242fe043..1163764ade0 100644
--- a/pkg/front_end/testcases/static_setter.dart.strong.expect
+++ b/pkg/front_end/testcases/static_setter.dart.strong.expect
@@ -3,7 +3,7 @@ import self as self;
 import "dart:core" as core;
 
 class Foo extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
 }
diff --git a/pkg/front_end/testcases/store_load.dart.direct.expect b/pkg/front_end/testcases/store_load.dart.direct.expect
index 166ecccfa83..c2d374273ba 100644
--- a/pkg/front_end/testcases/store_load.dart.direct.expect
+++ b/pkg/front_end/testcases/store_load.dart.direct.expect
@@ -4,23 +4,23 @@ import "dart:core" as core;
 
 class Foo extends core::Object {
   field dynamic _field = null;
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
 }
 class FooValue extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
 }
 class Bar extends core::Object {
   field dynamic _field = null;
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
 }
 class BarValue extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
 }
diff --git a/pkg/front_end/testcases/store_load.dart.outline.expect b/pkg/front_end/testcases/store_load.dart.outline.expect
index e8418c60081..9f4aeb614a3 100644
--- a/pkg/front_end/testcases/store_load.dart.outline.expect
+++ b/pkg/front_end/testcases/store_load.dart.outline.expect
@@ -4,20 +4,20 @@ import "dart:core" as core;
 
 class Foo extends core::Object {
   field dynamic _field;
-  constructor •() → void
+  default constructor •() → void
     ;
 }
 class FooValue extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     ;
 }
 class Bar extends core::Object {
   field dynamic _field;
-  constructor •() → void
+  default constructor •() → void
     ;
 }
 class BarValue extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     ;
 }
 static method main() → dynamic
diff --git a/pkg/front_end/testcases/store_load.dart.strong.expect b/pkg/front_end/testcases/store_load.dart.strong.expect
index c06ea707f23..1c51fda63b0 100644
--- a/pkg/front_end/testcases/store_load.dart.strong.expect
+++ b/pkg/front_end/testcases/store_load.dart.strong.expect
@@ -4,23 +4,23 @@ import "dart:core" as core;
 
 class Foo extends core::Object {
   field dynamic _field = null;
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
 }
 class FooValue extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
 }
 class Bar extends core::Object {
   field dynamic _field = null;
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
 }
 class BarValue extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
 }
diff --git a/pkg/front_end/testcases/super_rasta_copy.dart.direct.expect b/pkg/front_end/testcases/super_rasta_copy.dart.direct.expect
index d3e405c938e..8a18e885c99 100644
--- a/pkg/front_end/testcases/super_rasta_copy.dart.direct.expect
+++ b/pkg/front_end/testcases/super_rasta_copy.dart.direct.expect
@@ -8,7 +8,7 @@ class A extends core::Object {
   field dynamic c = null;
   field dynamic d = null;
   final field dynamic f = null;
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
   get e() → dynamic
@@ -32,7 +32,7 @@ class A extends core::Object {
 }
 class B extends self::A {
   final field dynamic d = null;
-  constructor •() → void
+  default constructor •() → void
     : super self::A::•()
     ;
   get b() → dynamic
@@ -41,7 +41,7 @@ class B extends self::A {
   set i(dynamic x) → dynamic {}
 }
 class C extends self::B {
-  constructor •() → void
+  default constructor •() → void
     : super self::B::•()
     ;
   method test() → dynamic {
diff --git a/pkg/front_end/testcases/super_rasta_copy.dart.outline.expect b/pkg/front_end/testcases/super_rasta_copy.dart.outline.expect
index 91d4f2a977c..61dc3881eba 100644
--- a/pkg/front_end/testcases/super_rasta_copy.dart.outline.expect
+++ b/pkg/front_end/testcases/super_rasta_copy.dart.outline.expect
@@ -8,7 +8,7 @@ class A extends core::Object {
   field dynamic c;
   field dynamic d;
   final field dynamic f;
-  constructor •() → void
+  default constructor •() → void
     ;
   get e() → dynamic
     ;
@@ -35,7 +35,7 @@ class A extends core::Object {
 }
 class B extends self::A {
   final field dynamic d;
-  constructor •() → void
+  default constructor •() → void
     ;
   get b() → dynamic
     ;
@@ -45,7 +45,7 @@ class B extends self::A {
     ;
 }
 class C extends self::B {
-  constructor •() → void
+  default constructor •() → void
     ;
   method test() → dynamic
     ;
diff --git a/pkg/front_end/testcases/super_rasta_copy.dart.strong.expect b/pkg/front_end/testcases/super_rasta_copy.dart.strong.expect
index 87ae1479c83..42ea2a5b417 100644
--- a/pkg/front_end/testcases/super_rasta_copy.dart.strong.expect
+++ b/pkg/front_end/testcases/super_rasta_copy.dart.strong.expect
@@ -8,7 +8,7 @@ class A extends core::Object {
   field dynamic c = null;
   field dynamic d = null;
   final field dynamic f = null;
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
   get e() → dynamic
@@ -32,7 +32,7 @@ class A extends core::Object {
 }
 class B extends self::A {
   final field dynamic d = null;
-  constructor •() → void
+  default constructor •() → void
     : super self::A::•()
     ;
   get b() → dynamic
@@ -41,7 +41,7 @@ class B extends self::A {
   set i(dynamic x) → void {}
 }
 class C extends self::B {
-  constructor •() → void
+  default constructor •() → void
     : super self::B::•()
     ;
   method test() → dynamic {
diff --git a/pkg/front_end/testcases/type_variable_as_super.dart.direct.expect b/pkg/front_end/testcases/type_variable_as_super.dart.direct.expect
index f896d533091..fd84fc72030 100644
--- a/pkg/front_end/testcases/type_variable_as_super.dart.direct.expect
+++ b/pkg/front_end/testcases/type_variable_as_super.dart.direct.expect
@@ -3,7 +3,7 @@ import self as self;
 import "dart:core" as core;
 
 abstract class A<T extends core::Object> extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
 }
@@ -13,12 +13,13 @@ abstract class B<T extends core::Object> extends core::Object {
     ;
 }
 class C<T extends core::Object> extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
 }
+const field dynamic #errors = const <dynamic>["Error: The type variable 'T' can't be used as supertype.", "Error: The type variable 'T' can't be used as supertype.", "Error: The type variable 'T' can't be used as supertype."]/* from null */;
 static method main() → dynamic {
-  throw new core::NoSuchMethodError::•(null, #A, <dynamic>[], <dynamic, dynamic>{}, null);
-  throw new core::NoSuchMethodError::•(null, #B, <dynamic>[], <dynamic, dynamic>{}, null);
+  throw new core::AbstractClassInstantiationError::•("A");
+  throw new core::AbstractClassInstantiationError::•("B");
   new self::C::•<dynamic>();
 }
diff --git a/pkg/front_end/testcases/type_variable_as_super.dart.outline.expect b/pkg/front_end/testcases/type_variable_as_super.dart.outline.expect
index d8208123e00..2d8fc872f44 100644
--- a/pkg/front_end/testcases/type_variable_as_super.dart.outline.expect
+++ b/pkg/front_end/testcases/type_variable_as_super.dart.outline.expect
@@ -3,7 +3,7 @@ import self as self;
 import "dart:core" as core;
 
 abstract class A<T extends core::Object> extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     ;
 }
 abstract class B<T extends core::Object> extends core::Object {
@@ -11,7 +11,7 @@ abstract class B<T extends core::Object> extends core::Object {
     ;
 }
 class C<T extends core::Object> extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     ;
 }
 static method main() → dynamic
diff --git a/pkg/front_end/testcases/uninitialized_fields.dart.outline.expect b/pkg/front_end/testcases/uninitialized_fields.dart.outline.expect
index 09ac4e380df..e2a349c358a 100644
--- a/pkg/front_end/testcases/uninitialized_fields.dart.outline.expect
+++ b/pkg/front_end/testcases/uninitialized_fields.dart.outline.expect
@@ -4,7 +4,7 @@ import "dart:core" as core;
 
 class Uninitialized extends core::Object {
   field core::int x;
-  constructor •() → void
+  default constructor •() → void
     ;
 }
 class PartiallyInitialized extends core::Object {
diff --git a/pkg/front_end/testcases/unused_methods.dart.direct.expect b/pkg/front_end/testcases/unused_methods.dart.direct.expect
index 4bd1746fbb1..db19efa1bf1 100644
--- a/pkg/front_end/testcases/unused_methods.dart.direct.expect
+++ b/pkg/front_end/testcases/unused_methods.dart.direct.expect
@@ -9,7 +9,7 @@ class UnusedClass extends core::Object {
   }
 }
 abstract class UsedAsBaseClass extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
   method usedInSubclass() → void {
@@ -23,7 +23,7 @@ abstract class UsedAsBaseClass extends core::Object {
   }
 }
 class UsedAsInterface extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
   method usedInSubclass() → void {
@@ -31,7 +31,7 @@ class UsedAsInterface extends core::Object {
   }
 }
 class InstantiatedButMethodsUnused extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
   method usedInSubclass() → void {
@@ -39,7 +39,7 @@ class InstantiatedButMethodsUnused extends core::Object {
   }
 }
 class ClassA extends self::UsedAsBaseClass implements self::UsedAsInterface, self::InstantiatedButMethodsUnused {
-  constructor •() → void
+  default constructor •() → void
     : super self::UsedAsBaseClass::•()
     ;
   method usedInSubclass() → void {
@@ -47,7 +47,7 @@ class ClassA extends self::UsedAsBaseClass implements self::UsedAsInterface, sel
   }
 }
 class ClassB extends self::UsedAsBaseClass implements self::UsedAsInterface, self::InstantiatedButMethodsUnused {
-  constructor •() → void
+  default constructor •() → void
     : super self::UsedAsBaseClass::•()
     ;
   method usedInSubclass() → void {
diff --git a/pkg/front_end/testcases/unused_methods.dart.outline.expect b/pkg/front_end/testcases/unused_methods.dart.outline.expect
index 860b54f6e52..3065d87ae73 100644
--- a/pkg/front_end/testcases/unused_methods.dart.outline.expect
+++ b/pkg/front_end/testcases/unused_methods.dart.outline.expect
@@ -7,7 +7,7 @@ class UnusedClass extends core::Object {
     ;
 }
 abstract class UsedAsBaseClass extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     ;
   method usedInSubclass() → void
     ;
@@ -17,25 +17,25 @@ abstract class UsedAsBaseClass extends core::Object {
     ;
 }
 class UsedAsInterface extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     ;
   method usedInSubclass() → void
     ;
 }
 class InstantiatedButMethodsUnused extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     ;
   method usedInSubclass() → void
     ;
 }
 class ClassA extends self::UsedAsBaseClass implements self::UsedAsInterface, self::InstantiatedButMethodsUnused {
-  constructor •() → void
+  default constructor •() → void
     ;
   method usedInSubclass() → void
     ;
 }
 class ClassB extends self::UsedAsBaseClass implements self::UsedAsInterface, self::InstantiatedButMethodsUnused {
-  constructor •() → void
+  default constructor •() → void
     ;
   method usedInSubclass() → void
     ;
diff --git a/pkg/front_end/testcases/unused_methods.dart.strong.expect b/pkg/front_end/testcases/unused_methods.dart.strong.expect
index 02debc74e58..a7797065beb 100644
--- a/pkg/front_end/testcases/unused_methods.dart.strong.expect
+++ b/pkg/front_end/testcases/unused_methods.dart.strong.expect
@@ -3,7 +3,7 @@ import self as self;
 import "dart:core" as core;
 
 abstract class UsedAsBaseClass extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
   abstract method usedInSubclass() → void;
@@ -16,14 +16,14 @@ abstract class UsedAsInterface extends core::Object {
   abstract method usedInSubclass() → void;
 }
 class InstantiatedButMethodsUnused extends core::Object {
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
   method usedInSubclass() → void
     throw "Method removed by tree-shaking";
 }
 class ClassA extends self::UsedAsBaseClass implements self::UsedAsInterface, self::InstantiatedButMethodsUnused {
-  constructor •() → void
+  default constructor •() → void
     : super self::UsedAsBaseClass::•()
     ;
   method usedInSubclass() → void {
@@ -31,7 +31,7 @@ class ClassA extends self::UsedAsBaseClass implements self::UsedAsInterface, sel
   }
 }
 class ClassB extends self::UsedAsBaseClass implements self::UsedAsInterface, self::InstantiatedButMethodsUnused {
-  constructor •() → void
+  default constructor •() → void
     : super self::UsedAsBaseClass::•()
     ;
   method usedInSubclass() → void {
diff --git a/pkg/front_end/testcases/void-methods.dart.direct.expect b/pkg/front_end/testcases/void-methods.dart.direct.expect
index e0dc6346662..6ae6f5c2059 100644
--- a/pkg/front_end/testcases/void-methods.dart.direct.expect
+++ b/pkg/front_end/testcases/void-methods.dart.direct.expect
@@ -4,13 +4,13 @@ import "dart:core" as core;
 
 class Foo extends core::Object {
   field core::List<dynamic> list = <dynamic>[1, 2, 3];
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
   set first(dynamic x) → dynamic
-    this.list.[]=(0, x);
+    return let final dynamic #t1 = this.list in let final dynamic #t2 = 0 in let final dynamic #t3 = x in let final dynamic #t4 = #t1.[]=(#t2, #t3) in #t3;
   operator []=(dynamic x, dynamic y) → dynamic
-    this.list.[]=(x, y);
+    return let final dynamic #t5 = this.list in let final dynamic #t6 = x in let final dynamic #t7 = y in let final dynamic #t8 = #t5.[]=(#t6, #t7) in #t7;
   method clear() → void
     return this.list.clear();
 }
diff --git a/pkg/front_end/testcases/void-methods.dart.outline.expect b/pkg/front_end/testcases/void-methods.dart.outline.expect
index 5363bf911c6..6b4a5049d46 100644
--- a/pkg/front_end/testcases/void-methods.dart.outline.expect
+++ b/pkg/front_end/testcases/void-methods.dart.outline.expect
@@ -4,7 +4,7 @@ import "dart:core" as core;
 
 class Foo extends core::Object {
   field core::List<dynamic> list;
-  constructor •() → void
+  default constructor •() → void
     ;
   set first(dynamic x) → dynamic
     ;
diff --git a/pkg/front_end/testcases/void-methods.dart.strong.expect b/pkg/front_end/testcases/void-methods.dart.strong.expect
index cd527638a7b..e130f032401 100644
--- a/pkg/front_end/testcases/void-methods.dart.strong.expect
+++ b/pkg/front_end/testcases/void-methods.dart.strong.expect
@@ -4,10 +4,10 @@ import "dart:core" as core;
 
 class Foo extends core::Object {
   field core::List<dynamic> list = <dynamic>[1, 2, 3];
-  constructor •() → void
+  default constructor •() → void
     : super core::Object::•()
     ;
-  set first(dynamic x) → dynamic
+  set first(dynamic x) → void
     return let final dynamic #t1 = this.{self::Foo::list} in let final dynamic #t2 = 0 in let final dynamic #t3 = x in let final dynamic #t4 = #t1.{core::List::[]=}(#t2, #t3) in #t3;
   operator []=(dynamic x, dynamic y) → dynamic
     return let final dynamic #t5 = this.{self::Foo::list} in let final dynamic #t6 = x in let final dynamic #t7 = y in let final dynamic #t8 = #t5.{core::List::[]=}(#t6, #t7) in #t7;