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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#include "mozilla/Assertions.h"
#include <unistd.h>
#include <signal.h>
#include <string.h>
#include <sys/wait.h>
void handler(int signum) { exit(gMozCrashReason == nullptr ? 1 : 0); }
int main(int argc, char** argv) {
// libxul starts with gMozCrashReason set to nullptr.
if (gMozCrashReason) {
fprintf(stderr, "gMozCrashReason unexpectedly starts set to %s.\n",
gMozCrashReason);
return 1;
}
// The strategy here is simple: fork, trigger an abort from the child and
// observe behavior.
pid_t child = fork();
if (child == 0) {
struct sigaction sa;
memset(&sa, 0, sizeof(sa));
sa.sa_handler = handler;
sigemptyset(&sa.sa_mask);
for (int i = 1; i < 10; ++i)
if (sigaction(SIGSEGV, &sa, nullptr) == -1) {
perror(argv[0]);
return 1;
}
// Trigger an actual verbose crash. This calls a function within libxul to
// make sure it produces verbose crash.
mozilla::detail::InvalidArrayIndex_CRASH(2, 2);
} else {
// Recover exit status from child, check it's an actual crash and that
// gMozCrashReason is set.
int waitres;
if (wait(&waitres) >= 0) {
if (WIFEXITED(waitres) && WEXITSTATUS(waitres) == 0) return 0;
fprintf(stderr,
"Crash didn't happen in the expected way.\n"
"normal exit: %d.\n"
"signaled exit: %d.\n"
"exit status: %d.\n"
"signal used: %d.\n",
WIFEXITED(waitres), WIFSIGNALED(waitres),
(WIFEXITED(waitres) ? WEXITSTATUS(waitres) : -1),
(WIFSIGNALED(waitres) ? WTERMSIG(waitres) : -1));
return 1;
}
}
}
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