gcc/testsuite/gcc.dg/switch-9.c

   1 /* PR middle-end/18859 */
   2 /* { dg-do compile } */
   3 /* { dg-options "" } */
   4
   5 void foo(int a)
   6 {
   7   switch (a)
   8   {
   9     case 0 ... -1:  /* { dg-warning "empty range" } */
  10       a = a+2;
  11       break;
  12
  13     case 1 ... 2:
  14       a = 0;
  15       break;
  16
  17     case 3 ... 4:
  18       a = 1;
  19       break;
  20
  21     case 5 ... 6:
  22       a = 0;
  23       break;
  24   }
  25 }