gcc/testsuite/gcc.dg/c2x-attr-fallthrough-6.c

   1 /* Test C2x attribute syntax.  Invalid use of fallthrough attribute in
   2    bad context inside switch.  */
   3 /* { dg-do compile } */
   4 /* { dg-options "-std=c2x -pedantic-errors -Wextra" } */
   5
   6 int
   7 f (int a)
   8 {
   9   switch (a)
  10     {
  11     case 1:
  12       a++;
  13       [[fallthrough]]; /* { dg-error "attribute 'fallthrough' not preceding a case label or default label" } */
  14       a++;
  15       [[fallthrough]]; /* { dg-error "attribute 'fallthrough' not preceding a case label or default label" } */
  16     }
  17   return a;
  18 }