gcc/testsuite/gcc.dg/non-local-goto-1.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 }
  19
  20 int execute(int cmd)
  21 {
  22   __label__ start;
  23
  24   void raise(void)
  25   {
  26     goto start;
  27   }
  28
  29   int last;
  30
  31   bar ();
  32
  33   last = 0;
  34
  35 start:
  36
  37   if (last == 0)
  38     while (1)
  39       {
  40         last = 1;
  41         raise ();
  42       }
  43
  44   if (last == 0)
  45     return 0;
  46   else
  47     return cmd;
  48 }
  49
  50 int main(void)
  51 {
  52   if (execute (1) == 0)
  53     abort ();
  54
  55   return 0;
  56 }