gcc/testsuite/gcc.dg/non-local-goto-2.c

   1 /* { dg-do run } */
   2 /* { dg-options "-O2" } */
   3
   4 extern void abort (void);
   5
   6 int global;
   7
   8 static foo(void) __attribute__((noinline));
   9
  10 static foo(void)
  11 {
  12   global = 1;
  13 }
  14
  15 static bar(void)
  16 {
  17   foo ();
  18   global = 0;
  19 }
  20
  21 int execute(int cmd)
  22 {
  23   __label__ start;
  24
  25   void raise(void)
  26   {
  27     goto start;
  28   }
  29
  30   int last;
  31
  32   bar ();
  33
  34   last = 0;
  35
  36 start:
  37
  38   if (last == 0)
  39     while (1)
  40       {
  41         last = 1;
  42         raise ();
  43       }
  44
  45   if (last == 0)
  46     return 0;
  47   else
  48     return cmd;
  49 }
  50
  51 int main(void)
  52 {
  53   if (execute (1) == 0)
  54     abort ();
  55
  56   return 0;
  57 }