1 /* This testcase is part of GDB, the GNU debugger. 2 3 Copyright 1997-2019 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 21 int 22 main () 23 { 24 int pid; 25 26 /* A statement before vfork to make sure a breakpoint on main isn't 27 set on vfork below. */ 28 pid = 1; 29 pid = vfork (); /* VFORK */ 30 if (pid == 0) 31 { 32 printf ("I'm the child!\n"); 33 _exit (0); 34 } 35 else 36 { 37 printf ("I'm the proud parent of child #%d!\n", pid); 38 } 39 40 return 0; 41 } 42