1 files changed, 47 insertions, 0 deletions
diff --git a/gcc/testsuite/g++.dg/lookup/anon1.C b/gcc/testsuite/g++.dg/lookup/anon1.C
new file mode 100644
index 0000000000..e4db50d946
--- /dev/null
+++ b/gcc/testsuite/g++.dg/lookup/anon1.C
@@ -0,0 +1,47 @@
+// PR c++/2039
+// Test that a scoped reference to a member of an anonymous union member of
+// a base class works properly.
+
+// { dg-do run }
+
+struct A
+{
+  long ia1;
+  union
+  {
+    long ia2;
+  };
+};
+
+struct B : public A
+{
+  void f1();
+  void f2();
+};
+
+void B::f1()
+{
+  ia1 = 11;
+  ia2 = 22;
+}
+
+void B::f2()
+{
+  ia1    = 33;
+  A::ia2 = 44;   // <<< !!!????
+}
+
+int main()
+{
+  B x;
+
+  x.f1();
+  if (x.ia1 != 11 || x.ia2 != 22)
+    return 1;
+
+  x.f2();
+  if (x.ia1 != 33 || x.ia2 != 44)
+    return 1;
+
+  return 0;
+}