1 /* This testcase is part of GDB, the GNU debugger. 2 3 Copyright 2014-2023 Free Software Foundation, Inc. 4 5 This program is free software; you can redistribute it and/or modify 6 it under the terms of the GNU General Public License as published by 7 the Free Software Foundation; either version 3 of the License, or 8 (at your option) any later version. 9 10 This program 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 13 GNU General Public License for more details. 14 15 You should have received a copy of the GNU General Public License 16 along with this program. If not, see <http://www.gnu.org/licenses/>. */ 17 18 #include <stdio.h> 19 #include <unistd.h> 20 #include <stdlib.h> 21 #include <pthread.h> 22 #include <signal.h> 23 24 void 25 handler (int sig) 26 { 27 } 28 29 void * 30 thread_function (void *arg) 31 { 32 volatile unsigned int i = 1; 33 34 while (i != 0) 35 usleep (1); 36 } 37 38 int 39 main (void) 40 { 41 pthread_t child_thread; 42 int i; 43 44 signal (SIGUSR1, handler); 45 pthread_create (&child_thread, NULL, thread_function, NULL); 46 pthread_join (child_thread, NULL); 47 48 return 0; 49 } 50