/* Test that sigprocmask does not read from the unused part of jmpbuf.

   Copyright (C) 2017-2018 Free Software Foundation, Inc.

   This file is part of the GNU C Library.

   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 <stdlib.h>

#include <signal.h>

#include <string.h>

#include <errno.h>

#include <setjmpP.h>

#include <support/next_to_fault.h>

#define SIZEOF_SIGSET_T sizeof (__jmp_buf_sigset_t)

static int

do_test (void)

{

  sigjmp_buf sj;

  struct support_next_to_fault sigset_t_buf

    = support_next_to_fault_allocate (SIZEOF_SIGSET_T);

  sigset_t *m_p = (sigset_t *) sigset_t_buf.buffer;

  sigset_t m;

  sigemptyset (&m);

  memcpy (m_p, &m, SIZEOF_SIGSET_T);

  sigprocmask (SIG_SETMASK, m_p, NULL);

  memcpy (&m, m_p, SIZEOF_SIGSET_T);

  if (sigsetjmp (sj, 0) == 0)

    {

      sigaddset (&m, SIGUSR1);

      memcpy (m_p, &m, SIZEOF_SIGSET_T);

      sigprocmask (SIG_SETMASK, m_p, NULL);

      memcpy (&m, m_p, SIZEOF_SIGSET_T);

      siglongjmp (sj, 1);

      return EXIT_FAILURE;

    }

  sigprocmask (SIG_SETMASK, NULL, m_p);

  memcpy (&m, m_p, SIZEOF_SIGSET_T);

  return sigismember (&m, SIGUSR1) ? EXIT_SUCCESS : EXIT_FAILURE;

}

#include <support/test-driver.c>