Apply visibility pragmas to class template declarations. This is needed because
we might use the declaration to build a type before seeing the definition.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@160176 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Sema/SemaTemplate.cpp b/lib/Sema/SemaTemplate.cpp
index 5d14d87..f76c75a 100644
--- a/lib/Sema/SemaTemplate.cpp
+++ b/lib/Sema/SemaTemplate.cpp
@@ -1102,6 +1102,8 @@
   if (Attr)
     ProcessDeclAttributeList(S, NewClass, Attr);
 
+  AddPushedVisibilityAttribute(NewClass);
+
   if (TUK != TUK_Friend)
     PushOnScopeChains(NewTemplate, S);
   else {
diff --git a/test/CodeGenCXX/visibility.cpp b/test/CodeGenCXX/visibility.cpp
index 92b7f44..3ea232d 100644
--- a/test/CodeGenCXX/visibility.cpp
+++ b/test/CodeGenCXX/visibility.cpp
@@ -1044,3 +1044,20 @@
   // CHECK: declare hidden void @_ZN6test563fooIiE3barEv
   // CHECK-HIDDEN: declare hidden void @_ZN6test563fooIiE3barEv
 }
+
+namespace test57 {
+#pragma GCC visibility push(hidden)
+  template <class T>
+  struct foo;
+  void bar(foo<int>*);
+  template <class T>
+  struct foo {
+    static void zed();
+  };
+  void bah() {
+    foo<int>::zed();
+  }
+#pragma GCC visibility pop
+  // CHECK: declare hidden void @_ZN6test573fooIiE3zedEv
+  // CHECK-HIDDEN: declare hidden void @_ZN6test573fooIiE3zedEv
+}