1 /* This testcase is part of GDB, the GNU debugger. 2 3 Copyright 2019-2020 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 <pthread.h> 21 22 static void * 23 f (void *arg) 24 { 25 int res = vfork (); 26 27 if (res == -1) 28 { 29 perror ("vfork"); 30 return NULL; 31 } 32 else if (res == 0) 33 { 34 /* Child. */ 35 _exit (0); 36 } 37 else 38 { 39 /* Parent. */ 40 return NULL; 41 } 42 } 43 44 int 45 main (void) 46 { 47 pthread_t tid; 48 49 pthread_create (&tid, NULL, f, NULL); 50 pthread_join (tid, NULL); 51 return 0; 52 } 53