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/* Test that loading libpthread does not break ld.so exceptions (bug 16628).
Copyright (C) 2016-2020 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 <dlfcn.h>
#include <signal.h>
#include <stdio.h>
#include <string.h>
#include <sys/wait.h>
#include <unistd.h>
static int
do_test (void)
{
void *handle = dlopen ("tst-latepthreadmod.so", RTLD_LOCAL | RTLD_LAZY);
if (handle == NULL)
{
printf ("error: dlopen failed: %s\n", dlerror ());
return 1;
}
void *ptr = dlsym (handle, "trigger_dynlink_failure");
if (ptr == NULL)
{
printf ("error: dlsym failed: %s\n", dlerror ());
return 1;
}
int (*func) (void) = ptr;
/* Run the actual test in a subprocess, to capture the error. */
int fds[2];
if (pipe (fds) < 0)
{
printf ("error: pipe: %m\n");
return 1;
}
pid_t pid = fork ();
if (pid < 0)
{
printf ("error: fork: %m\n");
return 1;
}
else if (pid == 0)
{
if (dup2 (fds[1], STDERR_FILENO) < 0)
_exit (2);
/* Trigger an abort. */
func ();
_exit (3);
}
/* NB: This assumes that the abort message is so short that the pipe
does not block. */
int status;
if (waitpid (pid, &status, 0) < 0)
{
printf ("error: waitpid: %m\n");
return 1;
}
/* Check the printed error message. */
if (close (fds[1]) < 0)
{
printf ("error: close: %m\n");
return 1;
}
char buf[512];
/* Leave room for the NUL terminator. */
ssize_t ret = read (fds[0], buf, sizeof (buf) - 1);
if (ret < 0)
{
printf ("error: read: %m\n");
return 1;
}
if (ret > 0 && buf[ret - 1] == '\n')
--ret;
buf[ret] = '\0';
printf ("info: exit status: %d, message: %s\n", status, buf);
if (strstr (buf, "undefined symbol: this_function_is_not_defined") == NULL)
{
printf ("error: message does not contain expected string\n");
return 1;
}
if (!WIFEXITED (status) || WEXITSTATUS (status) != 127)
{
printf ("error: unexpected process exit status\n");
return 1;
}
return 0;
}
#include <support/test-driver.c>
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