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

   This file is part of the GNU C Library.

   Contributed by Jakub Jelinek <jakub@redhat.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 <errno.h>

#include <error.h>

#include <signal.h>

#include <stdlib.h>

#include <stdio.h>

volatile int count;

void

sh (int sig)

{

  ++count;

}

int

main (void)

{

  struct sigaction sa;

  sa.sa_handler = sh;

  sigemptyset (&sa.sa_mask);

  sa.sa_flags = 0;

  if (sigaction (SIGUSR1, &sa, NULL) < 0)

    {

      printf ("sigaction failed: %m\n");

      exit (1);

    }

  if (raise (SIGUSR1) < 0)

    {

      printf ("first raise failed: %m\n");

      exit (1);

    }

  if (raise (SIGUSR1) < 0)

    {

      printf ("second raise failed: %m\n");

      exit (1);

    }

  if (count != 2)

    {

      printf ("signal handler not called 2 times\n");

      exit (1);

    }

  exit (0);

}