Check in LLVM r95781.
diff --git a/test/SemaCXX/ref-init-ambiguous.cpp b/test/SemaCXX/ref-init-ambiguous.cpp
new file mode 100644
index 0000000..976879e
--- /dev/null
+++ b/test/SemaCXX/ref-init-ambiguous.cpp
@@ -0,0 +1,28 @@
+// RUN: %clang_cc1 -fsyntax-only -verify %s -std=c++0x
+
+enum E2 { };
+
+struct A {
+ operator E2&(); // expected-note 3 {{candidate function}}
+};
+
+struct B {
+ operator E2&(); // expected-note 3 {{candidate function}}
+};
+
+struct C : B, A {
+};
+
+void test(C c) {
+ const E2 &e2 = c; // expected-error {{reference initialization of type 'enum E2 const &' with initializer of type 'struct C' is ambiguous}}
+}
+
+void foo(const E2 &);
+
+const E2 & re(C c) {
+ foo(c); // expected-error {{reference initialization of type 'enum E2 const &' with initializer of type 'struct C' is ambiguous}}
+
+ return c; // expected-error {{reference initialization of type 'enum E2 const &' with initializer of type 'struct C' is ambiguous}}
+}
+
+