diff --git a/tests/modular/private_symbols/a.dart b/tests/modular/private_symbols/a.dart
new file mode 100644
index 00000000000..817834f16ed
--- /dev/null
+++ b/tests/modular/private_symbols/a.dart
@@ -0,0 +1,5 @@
+import 's.dart';
+
+Object foo_a({Object foo = s}) {
+  return foo;
+}
diff --git a/tests/modular/private_symbols/b.dart b/tests/modular/private_symbols/b.dart
new file mode 100644
index 00000000000..1b3bfdc09b7
--- /dev/null
+++ b/tests/modular/private_symbols/b.dart
@@ -0,0 +1,5 @@
+import 's.dart';
+
+Object foo_b({Object foo = s}) {
+  return foo;
+}
diff --git a/tests/modular/private_symbols/main.dart b/tests/modular/private_symbols/main.dart
new file mode 100644
index 00000000000..1c05df46553
--- /dev/null
+++ b/tests/modular/private_symbols/main.dart
@@ -0,0 +1,10 @@
+import 'package:expect/expect.dart';
+import 'a.dart';
+import 'b.dart';
+
+void main() {
+  var s1 = foo_a();
+  var s2 = foo_b();
+  Expect.identical(s1, s2);
+  Expect.equals(s1, s2);
+}
diff --git a/tests/modular/private_symbols/modules.yaml b/tests/modular/private_symbols/modules.yaml
new file mode 100644
index 00000000000..d730f86f89f
--- /dev/null
+++ b/tests/modular/private_symbols/modules.yaml
@@ -0,0 +1,4 @@
+dependencies:
+  main: [a, b, expect]
+  a: s
+  b: s
diff --git a/tests/modular/private_symbols/s.dart b/tests/modular/private_symbols/s.dart
new file mode 100644
index 00000000000..4082afece5d
--- /dev/null
+++ b/tests/modular/private_symbols/s.dart
@@ -0,0 +1 @@
+const s = #_symbol;