gcc/testsuite/gcc.c-torture/execute/pr49161.c

   1 /* PR tree-optimization/49161 */
   2
   3 extern void abort (void);
   4
   5 int c;
   6
   7 __attribute__((noinline, noclone)) void
   8 bar (int x)
   9 {
  10   if (x != c++)
  11     abort ();
  12 }
  13
  14 __attribute__((noinline, noclone)) void
  15 foo (int x)
  16 {
  17   switch (x)
  18     {
  19     case 3: goto l1;
  20     case 4: goto l2;
  21     case 6: goto l3;
  22     default: return;
  23     }
  24 l1:
  25   goto l4;
  26 l2:
  27   goto l4;
  28 l3:
  29   bar (-1);
  30 l4:
  31   bar (0);
  32   if (x != 4)
  33     bar (1);
  34   if (x != 3)
  35     bar (-1);
  36   bar (2);
  37 }
  38
  39 int
  40 main ()
  41 {
  42   foo (3);
  43   if (c != 3)
  44     abort ();
  45   return 0;
  46 }