1 /*
2 * Copyright (c) 1985 Regents of the University of California.
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 * 3. Neither the name of the University nor the names of its contributors
14 * may be used to endorse or promote products derived from this software
15 * without specific prior written permission.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27 * SUCH DAMAGE.
28 */
29
30 #include <signal.h>
31 #include <stdlib.h>
32 #include <unistd.h>
33
34 #include "private/bionic_inline_raise.h"
35
abort()36 void abort() {
37 // Since abort() must not return, there's no error checking in this function:
38 // there's no way to report an error anyway.
39
40 // Unblock SIGABRT to give any signal handler a chance.
41 sigset64_t mask;
42 sigemptyset64(&mask);
43 sigaddset64(&mask, SIGABRT);
44 sigprocmask64(SIG_UNBLOCK, &mask, nullptr);
45
46 // Use inline_raise() to raise SIGABRT without adding an uninteresting
47 // stack frame that anyone investigating the crash would have to ignore.
48 inline_raise(SIGABRT);
49
50 // If that signal was ignored or was caught and the handler returned,
51 // remove the signal handler and raise SIGABRT again.
52 signal(SIGABRT, SIG_DFL);
53 inline_raise(SIGABRT);
54
55 // If we get this far, just exit.
56 _exit(127);
57 }
58