gcc/testsuite/c-c++-common/Wimplicit-fallthrough-35.c

   1 /* PR c/79152 */
   2 /* { dg-do compile } */
   3 /* { dg-options "-Wimplicit-fallthrough" } */
   4
   5 extern void foo (int);
   6
   7 void
   8 f (int i)
   9 {
  10   switch (i)
  11     {
  12     case 0:
  13       foo (0);
  14 l1:
  15       foo (1);
  16     }
  17
  18   switch (i)
  19     {
  20     case 0:
  21       foo (0);
  22 l2:;
  23     }
  24
  25   switch (i)
  26     {
  27     case 0:
  28       foo (0);
  29 l3:
  30 l4:
  31       foo (1);
  32     }
  33
  34   switch (i)
  35     {
  36     case 0:
  37       foo (0);
  38 l5:
  39 l6:;
  40     }
  41
  42   switch (i)
  43     {
  44     case 0:
  45       foo (0); /* { dg-warning "statement may fall through" } */
  46 l7:
  47 l8:
  48     case 1:
  49       foo (1);
  50     }
  51
  52   switch (i)
  53     {
  54     case 0:
  55       foo (0); /* { dg-warning "statement may fall through" } */
  56 l9:
  57     case 1:
  58 l10:
  59       foo (1);
  60     }
  61 }