1 files changed, 19 insertions, 0 deletions
diff --git a/gcc-4.9/gcc/testsuite/g++.dg/template/error50.C b/gcc-4.9/gcc/testsuite/g++.dg/template/error50.C
new file mode 100644
index 000000000..d8702f888
--- /dev/null
+++ b/gcc-4.9/gcc/testsuite/g++.dg/template/error50.C
@@ -0,0 +1,19 @@
+// PR c++/57327
+
+template<class T>
+struct A {};
+
+template<class T>
+void f(A<T>&) {}
+
+struct B : A<long> {};
+
+struct C : A<char> {};
+
+struct D : B, C {};
+
+int main()
+{
+  D d;
+  f(d);  // { dg-error "no matching" }
+}        // { dg-message "'A<T>' is an ambiguous base" "" { target *-*-* } 18 }