Look at incomplete FunctionTemplateDecls in order to determine whether
a CXXRecordDecl is complete. Fixes Bug 13086.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@158469 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/test/SemaCXX/warn-unused-member.cpp b/test/SemaCXX/warn-unused-member.cpp
index 00de8a9..9ec9df6 100644
--- a/test/SemaCXX/warn-unused-member.cpp
+++ b/test/SemaCXX/warn-unused-member.cpp
@@ -142,6 +142,13 @@
   int by_initializer_;
 };
 
+namespace templates {
+class B {
+  template <typename T> void f(T t);
+  int a;
+};
+}  // namespace templates
+
 namespace mutual_friends {
 // Undefined methods make mutual friends undefined.
 class A {