| /* This testcase is part of GDB, the GNU debugger. |
| |
| Copyright 2017-2021 Free Software Foundation, Inc. |
| |
| This program is free software; you can redistribute it and/or modify |
| it under the terms of the GNU General Public License as published by |
| the Free Software Foundation; either version 3 of the License, or |
| (at your option) any later version. |
| |
| This program 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 General Public License for more details. |
| |
| You should have received a copy of the GNU General Public License |
| along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
| |
| #include <stdio.h> |
| #include <stdlib.h> |
| #include <string.h> |
| #include <sys/types.h> |
| #include <unistd.h> |
| #include <pthread.h> |
| #include <errno.h> |
| |
| /* This barrier ensures we only reach the initial breakpoint after both threads |
| have set errno. */ |
| pthread_barrier_t start_threads_barrier; |
| |
| static void |
| break_here (void) |
| { |
| } |
| |
| static void * |
| thread_routine (void *arg) |
| { |
| errno = 42; |
| pthread_barrier_wait (&start_threads_barrier); |
| |
| break_here (); |
| |
| while (1) |
| sleep (1); |
| |
| return NULL; |
| } |
| |
| int |
| main (int argc, char *argv) |
| { |
| pthread_t the_thread; |
| int err; |
| |
| pthread_barrier_init (&start_threads_barrier, NULL, 2); |
| |
| err = pthread_create (&the_thread, NULL, thread_routine, NULL); |
| if (err != 0) |
| { |
| fprintf (stderr, "pthread_create: %s (%d)\n", strerror (err), err); |
| exit (EXIT_FAILURE); |
| } |
| |
| errno = 23; |
| pthread_barrier_wait (&start_threads_barrier); |
| |
| err = pthread_join (the_thread, NULL); |
| if (err != 0) |
| { |
| fprintf (stderr, "pthread_join: %s (%d)\n", strerror (err), err); |
| exit (EXIT_FAILURE); |
| } |
| |
| exit (EXIT_SUCCESS); |
| } |