llvm-project/clang/test/Preprocessor/if_warning.c

22 lines
330 B
C

// RUN: %clang_cc1 %s -Eonly -Werror=undef -verify
// RUN: %clang_cc1 %s -Eonly -Werror-undef -verify
extern int x;
#if foo // expected-error {{'foo' is not defined, evaluates to 0}}
#endif
#ifdef foo
#endif
#if defined(foo)
#endif
// PR3938
#if 0
#ifdef D
#else 1 // Should not warn due to C99 6.10p4
#endif
#endif