1 // RUN: %clang_cc1 -fsyntax-only %s 2 3 // This is a test for an egregious hack in Clang that works around 4 // issues with GCC's evolution. libstdc++ 4.2.x uses __is_pod as an 5 // identifier (to declare a struct template like the one below), while 6 // GCC 4.3 and newer make __is_pod a keyword. Clang treats __is_pod as 7 // a keyword *unless* it is introduced following the struct keyword. 8 9 template<typename T> 10 struct __is_pod { 11 }; 12 13 __is_pod<int> ipi; 14 15 // Ditto for __is_same. 16 template<typename T> 17 struct __is_same { 18 }; 19 20 __is_same<int> isi; 21 22 // Another, similar egregious hack for __is_signed, which is a type 23 // trait in Embarcadero's compiler but is used as an identifier in 24 // libstdc++. 25 struct test_is_signed { 26 static const bool __is_signed = true; 27 }; 28 29 bool check_signed = test_is_signed::__is_signed; 30 31 #if __has_feature(is_pod) 32 # error __is_pod won't work now anyway 33 #endif 34
