gcc/testsuite/gcc.c-torture/execute/built-in-setjmp.c

   1 extern int strcmp(const char *, const char *);
   2 extern char *strcpy(char *, const char *);
   3 extern void abort(void);
   4 extern void exit(int);
   5
   6 void *buf[20];
   7
   8 void __attribute__((noinline))
   9 sub2 (void)
  10 {
  11   __builtin_longjmp (buf, 1);
  12 }
  13
  14 int
  15 main ()
  16 {
  17   char *p = (char *) __builtin_alloca (20);
  18
  19   strcpy (p, "test");
  20
  21   if (__builtin_setjmp (buf))
  22     {
  23       if (strcmp (p, "test") != 0)
  24         abort ();
  25
  26       exit (0);
  27     }
  28
  29   {
  30     int *q = (int *) __builtin_alloca (p[2] * sizeof (int));
  31     int i;
  32
  33     for (i = 0; i < p[2]; i++)
  34       q[i] = 0;
  35
  36     while (1)
  37       sub2 ();
  38   }
  39 }