1 // RUN: %clang_cc1 %s -Eonly -Werror=undef -verify 2 // RUN: %clang_cc1 %s -Eonly -Werror-undef -verify 3 4 extern 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