gcc/testsuite/gcc.dg/setjmp-4.c

   1 /* { dg-do run } */
   2 /* { dg-options "-O" } */
   3
   4 #include <setjmp.h>
   5
   6 extern void abort (void);
   7
   8 jmp_buf buf;
   9
  10 void raise0(void)
  11 {
  12   __builtin_longjmp (buf, 1);
  13 }
  14
  15 int execute(int cmd)
  16 {
  17   int last = 0;
  18
  19   __builtin_setjmp (buf);
  20
  21   if (last == 0)
  22     while (1)
  23       {
  24         last = 1;
  25         raise0 ();
  26       }
  27
  28   if (last == 0)
  29     return 0;
  30   else
  31     return cmd;
  32 }
  33
  34 int main(void)
  35 {
  36   if (execute (1) == 0)
  37     abort ();
  38
  39   return 0;
  40 }