clang/test/Preprocessor/if_warning.c

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