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/* Copyright (C) 2003-2021 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
<https://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);
}
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