gcc/testsuite/gcc.dg/c90-align-1.c

   1 /* Test _Alignof and _Alignas not in C90.  */
   2 /* { dg-do compile } */
   3 /* { dg-options "-std=iso9899:1990 -pedantic-errors" } */
   4
   5 int a = _Alignof (int); /* { dg-error "ISO C90 does not support '_Alignof'" } */
   6 _Alignas (int) int b; /* { dg-error "ISO C90 does not support '_Alignas'" } */