/* This testcase is part of GDB, the GNU debugger. Copyright 2021-2022 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 . */ #include static volatile int unblock_parent = 0; static void break_parent (void) { } int main (void) { alarm (30); if (vfork () != 0) { /* We want to guarantee that GDB processes the child exit event before the parent's breakpoint hit event. Make the parent wait on this variable that is eventually set by the test. */ while (!unblock_parent) usleep (1000); break_parent (); } else _exit (0); return 0; }