check whether sema issues a redefinition error

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@112347 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/test/SemaTemplate/inject-templated-friend.cpp b/test/SemaTemplate/inject-templated-friend.cpp
index 039f6df6ed625dddefeb2cf7c677d9ee6b084f04..fbe86d96389e124c5e52768825e022ab858b8a58 100644 (file)
--- a/test/SemaTemplate/inject-templated-friend.cpp
+++ b/test/SemaTemplate/inject-templated-friend.cpp
@@ -1,4 +1,5 @@
 // RUN: %clang %s -S -emit-llvm -o - | grep -e "define linkonce_odr.*_ZlsR11std_ostreamRK8StreamerI3FooE"
+// RUN: %clang -cc1 %s -DREDEFINE -verify
 // PR8007: friend function not instantiated.
 
 struct std_ostream
@@ -11,7 +12,7 @@ std_ostream cout;
 template <typename STRUCT_TYPE>
 struct Streamer
 {
-    friend std_ostream& operator << (std_ostream& o, const Streamer& f)
+    friend std_ostream& operator << (std_ostream& o, const Streamer& f) // expected-error{{redefinition of 'operator<<'}}
         {
             Streamer s(f);
             s(o);
@@ -26,14 +27,17 @@ struct Streamer
 
 typedef struct Foo {} Foo;
 
-std_ostream& operator << (std_ostream& o, const Streamer<Foo>& f);
-/*std_ostream& operator << (std_ostream& o, const Streamer<Foo>& f)
+std_ostream& operator << (std_ostream&, const Streamer<Foo>&);
+#ifdef REDEFINE
+std_ostream& operator << (std_ostream& o, const Streamer<Foo>&) // expected-note{{is here}}
 {
   // Sema should flag this as a redefinition
-}*/
+  return o;
+}
+#endif
 
 template <>
-void Streamer<Foo>::operator () (std_ostream& o) const
+void Streamer<Foo>::operator () (std_ostream& o) const // expected-note{{requested here}}
 {
 }