/* Copyright (C) 2003-2018 Free Software Foundation, Inc.

   This file is part of the GNU C Library.

   Contributed by Bao Duong <bduong@progress.com>, 2003.

   The GNU C Library is free software; you can redistribute it and/or

   modify it under the terms of the GNU Lesser General Public

   License as published by the Free Software Foundation; either

   version 2.1 of the License, or (at your option) any later version.

   The GNU C Library is distributed in the hope that it will be useful,

   but WITHOUT ANY WARRANTY; without even the implied warranty of

   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU

   Lesser General Public License for more details.

   You should have received a copy of the GNU Lesser General Public

   License along with the GNU C Library; if not, see

   <http://www.gnu.org/licenses/>.  */

#include <setjmp.h>

#include <signal.h>

#include <stdio.h>

#include <stdlib.h>

#include <sys/types.h>

static sigjmp_buf jmpbuf;

static void

sig_handler (int signo)

{

  siglongjmp (jmpbuf, 1);

}

static int

do_test (void)

{

  char *p = NULL;

  /* gcc can overwrite the success written value by scheduling instructions

     around sprintf.  It is allowed to do this since according to C99 the first

     argument of sprintf is a character array and NULL is not a valid character

     array.  Mark the return value as volatile so that it gets reloaded on

     return.  */

  volatile int ret = 0;

  if (signal (SIGSEGV, &sig_handler) == SIG_ERR)

    {

      perror ("installing SIGSEGV handler");

      return 1;

    }

  puts ("Attempting to sprintf to null ptr");

  if (setjmp (jmpbuf))

    {

      puts ("Exiting main...");

      return ret;

    }

  sprintf (p, "This should segv\n");

  return 1;

}

#define TEST_FUNCTION do_test ()

#include "../test-skeleton.c"