Add another testcase that was not being covered.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@155351 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/test/CodeGenCXX/visibility.cpp b/test/CodeGenCXX/visibility.cpp
index b9ed373..d126de3 100644
--- a/test/CodeGenCXX/visibility.cpp
+++ b/test/CodeGenCXX/visibility.cpp
@@ -682,3 +682,21 @@
   // CHECK: define weak_odr void @_ZN6test343barINS_3fooEEEvv
   // CHECK-HIDDEN: define weak_odr void @_ZN6test343barINS_3fooEEEvv
 }
+
+namespace test35 {
+  // This is a really ugly testcase. GCC propagates the DEFAULT in zed's
+  // definition. What we do instead is be conservative about merging
+  // implicit visibilities.
+  // FIXME: Maybe the best thing to do here is error? The test at least
+  // makes sure we don't produce a hidden symbol for foo<zed>::bar.
+  template<typename T>
+  struct DEFAULT foo {
+    void bar() {}
+  };
+  class zed;
+  template class foo<zed>;
+  class DEFAULT zed {
+  };
+  // CHECK: define weak_odr void @_ZN6test353fooINS_3zedEE3barEv
+  // CHECK-HIDDEN: define weak_odr void @_ZN6test353fooINS_3zedEE3barEv
+}