mirror of
https://github.com/cryb-to/cryb-to.git
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120 lines
3.3 KiB
C
120 lines
3.3 KiB
C
/*-
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* Copyright (c) 2016 Dag-Erling Smørgrav
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. The name of the author may not be used to endorse or promote
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* products derived from this software without specific prior written
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* permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include "cryb/impl.h"
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#include <sys/wait.h>
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#if HAVE_SYS_RESOURCE_H
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#include <sys/resource.h>
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#endif
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#include <signal.h>
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#include <stdint.h>
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#include <stdio.h>
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#include <string.h>
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#include <unistd.h>
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#include <cryb/assert.h>
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#include <cryb/test.h>
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/*
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* Verify that an assertion failure causes a SIGABRT. Note that we can't
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* just catch the signal, because abort(3) has other side effects (such as
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* flushing and closing streams) from which we couldn't recover.
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*/
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static void
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t_assert_child(void)
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{
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#if defined(HAVE_SETRLIMIT) && defined(RLIMIT_CORE)
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struct rlimit crl = { 0, 0 };
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#endif
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/* reset SIGABRT handler in case of shenanigans */
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signal(SIGABRT, SIG_DFL);
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#if defined(HAVE_SETRLIMIT) && defined(RLIMIT_CORE)
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/* prevent core dump */
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if (setrlimit(RLIMIT_CORE, &crl) != 0)
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t_printv("failed to disable core dump\n");
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#endif
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/* suppress assertion message */
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fclose(stderr);
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assert(0);
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}
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int
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t_assert_fail(char **desc CRYB_UNUSED, void *arg CRYB_UNUSED)
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{
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pid_t pid;
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int signo, status;
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t_assert((pid = fork()) != -1);
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if (pid == 0) {
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t_assert_child();
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_exit(1);
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}
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t_assert(waitpid(pid, &status, 0) == pid);
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if (!WIFSIGNALED(status)) {
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t_printv("expected child to raise a signal\n");
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return (0);
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}
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#ifdef WCOREDUMP
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if (WCOREDUMP(status))
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t_printv("warning: child dumped core\n");
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#endif
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if ((signo = WTERMSIG(status)) != SIGABRT) {
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t_printv("expected child to raise signal %d (SIGABRT), "
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"got signal %d\n", SIGABRT, signo);
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return (0);
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}
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return (1);
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}
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/***************************************************************************
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* Boilerplate
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*/
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static int
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t_prepare(int argc, char *argv[])
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{
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(void)argc;
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(void)argv;
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t_add_test(t_assert_fail, NULL, "assertion failed");
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return (0);
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}
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int
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main(int argc, char *argv[])
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{
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t_main(t_prepare, NULL, argc, argv);
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}
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