1  /* { dg-do run } */
       2  /* { dg-require-effective-target fstack_protector } */
       3  /* { dg-options "-fstack-protector-all -O2" } */
       4  
       5  extern volatile long *stack_chk_guard_ptr;
       6  
       7  void __attribute__ ((noipa))
       8  f (void)
       9  {
      10    volatile int x;
      11    /* Munging the contents of __stack_chk_guard should trigger a
      12       stack-smashing failure for this function.  */
      13    *stack_chk_guard_ptr += 1;
      14  }
      15  
      16  asm (
      17  "	.data\n"
      18  "	.align	3\n"
      19  "	.globl	stack_chk_guard_ptr\n"
      20  "stack_chk_guard_ptr:\n"
      21  "	.word	__stack_chk_guard\n"
      22  "	.weak	__stack_chk_guard\n"
      23  "__stack_chk_guard:\n"
      24  "	.word	0xdead4321\n"
      25  "	.text\n"
      26  "	.type	__stack_chk_fail, %function\n"
      27  "__stack_chk_fail:\n"
      28  "	movs	r0, #0\n"
      29  "	bl	exit\n"
      30  "	.size	__stack_chk_fail, .-__stack_chk_fail"
      31  );
      32  
      33  int
      34  main (void)
      35  {
      36    f ();
      37    __builtin_abort ();
      38  }