35 lines · cpp
1// RUN: %clang_cc1 -fsyntax-only -std=c++11 -verify %s2 3// libstdc++ 4.6.x contains a bug where it defines std::__atomic[0,1,2] as a4// non-inline namespace, then selects one of those namespaces and reopens it5// as inline, as a strange way of providing something like a using-directive.6// Clang has an egregious hack to work around the problem, by allowing a7// namespace to be converted from non-inline to inline in this one specific8// case.9 10// the last 4.6 release was 2013, so the hack is removed. This checks __atomic11// is not special.12#ifdef BE_THE_HEADER13 14#pragma clang system_header15 16namespace std {17namespace __atomic0 { // expected-note {{previous definition}}18typedef int foobar;19} // namespace __atomic020namespace __atomic1 {21typedef void foobar;22} // namespace __atomic123 24inline namespace __atomic0 {} // expected-error {{cannot be reopened as inline}}25} // namespace std26 27#else28 29#define BE_THE_HEADER30#include "libstdcxx_atomic_ns_hack.cpp"31 32std::foobar fb; // expected-error {{no type named 'foobar' in namespace}}33 34#endif35