1  /* Test __has_c_attribute.  Test basic properties.  */
       2  /* { dg-do preprocess } */
       3  /* { dg-options "-std=c2x -pedantic-errors" } */
       4  
       5  #ifdef __has_c_attribute
       6  /* OK.  */
       7  #else
       8  #error "__has_c_attribute not defined"
       9  #endif
      10  
      11  #ifndef __has_c_attribute
      12  #error "__has_c_attribute not defined"
      13  #endif
      14  
      15  #if defined __has_c_attribute
      16  /* OK.  */
      17  #else
      18  #error "__has_c_attribute not defined"
      19  #endif
      20  
      21  #if __has_c_attribute(foo)
      22  #error "foo attribute supported"
      23  #endif
      24  
      25  #if 0
      26  #elif __has_c_attribute(foo)
      27  #error "foo attribute supported"
      28  #endif