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/* Support file for atexit/exit, etc. race tests (BZ #27749).
Copyright (C) 2023 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/>. */
/* Check that atexit handler registered from another handler still called. */
#include <stdio.h>
#include <stdlib.h>
#include <support/check.h>
#include <support/xunistd.h>
#include <sys/wait.h>
#include <unistd.h>
static void
atexit_cb (void)
{
}
static void
atexit_last (void)
{
_exit (1);
}
static void
atexit_recursive (void)
{
atexit (&atexit_cb);
atexit (&atexit_last);
}
_Noreturn static void
test_and_exit (int count)
{
for (int i = 0; i < count; ++i)
atexit (&atexit_cb);
atexit (&atexit_recursive);
exit (0);
}
static int
do_test (void)
{
for (int i = 0; i < 100; ++i)
if (xfork () == 0)
test_and_exit (i);
for (int i = 0; i < 100; ++i)
{
int status;
xwaitpid (0, &status, 0);
if (!WIFEXITED (status))
FAIL_EXIT1 ("Failed iterations %d", i);
TEST_COMPARE (WEXITSTATUS (status), 1);
}
return 0;
}
#define TEST_FUNCTION do_test
#include <support/test-driver.c>
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