--- /dev/null
+// Copyright (C) 2007 Free Software Foundation
+// Contributed by Ollie Wild <aaw@google.com>
+// { dg-do compile }
+
+namespace N1 {
+ void f ();
+ struct f; // { dg-error "" "candidate" }
+}
+
+namespace N2 {
+ void f (int);
+ struct f; // { dg-error "" "candidate" }
+}
+
+namespace M {
+ using namespace N1;
+ using namespace N2;
+}
+
+using M::f; // { dg-error "ambiguous" }