1/* Test signals.
2 Copyright (C) 2000-2024 Free Software Foundation, Inc.
3 This file is part of the GNU C Library.
4
5 The GNU C Library is free software; you can redistribute it and/or
6 modify it under the terms of the GNU Lesser General Public
7 License as published by the Free Software Foundation; either
8 version 2.1 of the License, or (at your option) any later version.
9
10 The GNU C Library is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 Lesser General Public License for more details.
14
15 You should have received a copy of the GNU Lesser General Public
16 License along with the GNU C Library; if not, see
17 <https://www.gnu.org/licenses/>. */
18
19#define _GNU_SOURCE
20
21#include <pthread.h>
22#include <unistd.h>
23#include <stdio.h>
24#include <errno.h>
25#include <error.h>
26#include <assert.h>
27#include <sys/resource.h>
28#include <sys/wait.h>
29
30void *
31thr (void *arg)
32{
33 *(int *) 0 = 0;
34 return 0;
35}
36
37int foobar;
38
39int
40main (int argc, char *argv[])
41{
42 error_t err;
43 pid_t child;
44
45 struct rlimit limit;
46
47 limit.rlim_cur = 0;
48 limit.rlim_max = 0;
49
50 err = setrlimit (RLIMIT_CORE, rlimits: &limit);
51 if (err)
52 error (status: 1, errnum: err, format: "setrlimit");
53
54 child = fork ();
55 switch (child)
56 {
57 case -1:
58 error (status: 1, errno, format: "fork");
59 break;
60
61 case 0:
62 {
63 pthread_t tid;
64 void *ret;
65
66 err = pthread_create (newthread: &tid, attr: 0, start_routine: thr, arg: 0);
67 if (err)
68 error (status: 1, errnum: err, format: "pthread_create");
69
70 err = pthread_join (th: tid, thread_return: &ret);
71 assert_perror (err);
72
73 /* Should have never returned. Our parent expects us to fail
74 thus we succeed and indicate the error. */
75 return 0;
76 }
77
78 default:
79 {
80 pid_t pid;
81 int status;
82
83 pid = waitpid (pid: child, stat_loc: &status, options: 0);
84 printf (format: "pid = %d; child = %d; status = %d\n", pid, child, status);
85 assert (pid == child);
86 assert (status != 0);
87 }
88 }
89
90 return 0;
91}
92

source code of glibc/htl/tests/test-5.c