p6.cpp revision b4a7b1e587a232c95d02a8ca10eeba60164fbba1 
1// RUN: %clang_cc1 -std=c++11 %s -verify
2
3extern "C" void operator "" _a(const char *); // expected-error {{must have C++ linkage}}
4extern "C" template<char...> void operator "" _b(); // expected-error {{must have C++ linkage}}
5
6extern "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