common/static_assert.h

   1 #ifndef AL_STATIC_ASSERT_H
   2 #define AL_STATIC_ASSERT_H
   3
   4 #include <assert.h>
   5
   6
   7 #ifndef static_assert
   8 #ifdef HAVE_C11_STATIC_ASSERT
   9 #define static_assert _Static_assert
  10 #else
  11 #define CTASTR2(_pre,_post) _pre##_post
  12 #define CTASTR(_pre,_post) CTASTR2(_pre,_post)
  13 #if defined(__COUNTER__)
  14 #define static_assert(_cond, _msg) typedef struct { int CTASTR(static_assert_failed_at_line_,__LINE__) : !!(_cond); } CTASTR(static_assertion_,__COUNTER__)
  15 #else
  16 #define static_assert(_cond, _msg) struct { int CTASTR(static_assert_failed_at_line_,__LINE__) : !!(_cond); }
  17 #endif
  18 #endif
  19 #endif
  20
  21 #endif /* AL_STATIC_ASSERT_H */