clang/test/Preprocessor/macro-reserved.cpp

   1 // RUN: %clang_cc1 -fsyntax-only -verify -pedantic -std=c++98 %s
   2
   3 #define for 0    // expected-warning {{keyword is hidden by macro definition}}
   4 #define final 1
   5 #define __HAVE_X 0
   6 #define _HAVE_X 0
   7 #define X__Y
   8
   9 #undef for
  10 #undef final
  11 #undef __HAVE_X
  12 #undef _HAVE_X
  13 #undef X__Y
  14
  15 #undef __cplusplus // expected-warning {{undefining builtin macro}}
  16 #define __cplusplus
  17
  18 // allowlisted definitions
  19 #define while while
  20 #define const
  21 #define static
  22 #define extern
  23 #define inline
  24
  25 #undef while
  26 #undef const
  27 #undef static
  28 #undef extern
  29 #undef inline
  30
  31 #define inline __inline
  32 #undef  inline
  33 #define inline __inline__
  34 #undef  inline
  35
  36 #define inline inline__  // expected-warning {{keyword is hidden by macro definition}}
  37 #undef  inline
  38 #define extern __inline  // expected-warning {{keyword is hidden by macro definition}}
  39 #undef  extern
  40 #define extern __extern  // expected-warning {{keyword is hidden by macro definition}}
  41 #undef  extern
  42 #define extern __extern__ // expected-warning {{keyword is hidden by macro definition}}
  43 #undef  extern
  44
  45 #define inline _inline   // expected-warning {{keyword is hidden by macro definition}}
  46 #undef  inline
  47 #define volatile   // expected-warning {{keyword is hidden by macro definition}}
  48 #undef  volatile
  49
  50 #pragma clang diagnostic warning "-Wreserved-macro-identifier"
  51
  52 #define switch if  // expected-warning {{keyword is hidden by macro definition}}
  53 #define final 1
  54 #define __HAVE_X 0 // expected-warning {{macro name is a reserved identifier}}
  55 #define _HAVE_X 0  // expected-warning {{macro name is a reserved identifier}}
  56 #define X__Y       // expected-warning {{macro name is a reserved identifier}}
  57
  58 #undef __cplusplus // expected-warning {{macro name is a reserved identifier}}
  59 #undef _HAVE_X     // expected-warning {{macro name is a reserved identifier}}
  60 #undef X__Y        // expected-warning {{macro name is a reserved identifier}}
  61
  62 int x;