[tests] Add regression test for dartbug.com/60643

Change-Id: I71d506e8cb7708478466b2162ccc40f0682f308c
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/425941
Reviewed-by: Mark Zhou <markzipan@google.com>
Reviewed-by: Nate Biggs <natebiggs@google.com>
Reviewed-by: Bob Nystrom <rnystrom@google.com>

tests/language/call/regress60643_test.dart

@@ -0,0 +1,49 @@
+// Copyright (c) 2025, the Dart project authors.  Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+/// Regression test for https://github.com/dart-lang/sdk/issues/60643.
+///
+/// Getter invocations where the getter return type is a generic type argument
+/// instantiated as `dynamic` or `Function` should get runtime checks to
+/// ensure they are called correctly.
+
+import "package:expect/expect.dart";
+
+class GetterContainer<T> {
+  T? _value;
+  set value(T v) => _value = v;
+  T get value => _value!;
+}
+
+class FieldContainer<T> {
+  T? value;
+}
+
+void main() {
+  var getterContainer = GetterContainer();
+  getterContainer.value = (int i, {required String s}) {
+    return 'hello world';
+  };
+  Expect.throws<NoSuchMethodError>(() => getterContainer.value());
+  Expect.throws<NoSuchMethodError>(() => getterContainer.value(10));
+  Expect.equals('hello world', getterContainer.value(10, s: 'hello'));
+
+  var fieldContainer = FieldContainer();
+  fieldContainer.value = (int i, {required String s}) {
+    return 'hello world';
+  };
+  Expect.throws<NoSuchMethodError>(() => fieldContainer.value());
+  Expect.throws<NoSuchMethodError>(() => fieldContainer.value(10));
+  Expect.equals('hello world', fieldContainer.value(10, s: 'hello'));
+
+  var outer = FieldContainer<dynamic>();
+  var inner = GetterContainer<Function>();
+  inner.value = (int i, {required String s}) {
+    return 'hello world';
+  };
+  outer.value = inner;
+  Expect.throws<NoSuchMethodError>(() => outer.value.value());
+  Expect.throws<NoSuchMethodError>(() => outer.value.value(10));
+  Expect.equals('hello world', outer.value.value(10, s: 'hello'));
+}