1  /* Test unreachable not defined in <stddef.h> for C11.  */
       2  /* { dg-do preprocess } */
       3  /* { dg-options "-std=c11 -pedantic-errors" } */
       4  
       5  #include <stddef.h>
       6  
       7  #ifdef unreachable
       8  #error "unreachable defined"
       9  #endif