1// RUN: %clang_cc1 %s -Eonly -Werror=undef -verify 2// RUN: %clang_cc1 %s -Eonly -Werror-undef -verify 3 4extern int x; 5 6#if foo // expected-error {{'foo' is not defined, evaluates to 0}} 7#endif 8 9#ifdef foo 10#endif 11 12#if defined(foo) 13#endif 14 15 16// PR3938 17#if 0 18#ifdef D 19#else 1 // Should not warn due to C99 6.10p4 20#endif 21#endif 22 23// rdar://9475098 24#if 0 25#else 1 // expected-warning {{extra tokens}} 26#endif 27 28// PR6852 29#if 'somesillylongthing' // expected-warning {{character constant too long for its type}} \ 30 // expected-warning {{multi-character character constant}} 31#endif 32