gcc/testsuite/c-c++-common/Wimplicit-fallthrough-21.c

   1 /* PR c/7652 */
   2 /* { dg-do compile } */
   3 /* { dg-options "-Wimplicit-fallthrough" } */
   4
   5 int
   6 f (int i)
   7 {
   8   switch (i)
   9     {
  10     case 0:
  11       i++;
  12       __attribute__((fallthrough));
  13     lab1:
  14     case 1:
  15       i++;
  16       __attribute__((fallthrough)); /* { dg-warning "not preceding" } */
  17     lab2:
  18       --i;
  19       break;
  20     case 3:
  21       i++;
  22       break;
  23     }
  24   return 0;
  25 }