1 // RUN: %clang_cc1 -std=c++11 %s -verify
2 
3 extern "C" void operator "" _a(const char *); // expected-error {{must have C++ linkage}}
4 extern "C" template<char...> void operator "" _b(); // expected-error {{must have C++ linkage}}
5 
6 extern "C" {
7   void operator "" _c(const char *); // expected-error {{must have C++ linkage}}
8   template<char...> void operator "" _d(); // expected-error {{must have C++ linkage}}
9   namespace N {
10     void operator "" _e(const char *); // expected-error {{must have C++ linkage}}
11     template<char...> void operator "" _f(); // expected-error {{must have C++ linkage}}
12   }
13 }
14