| /* This testcase is part of GDB, the GNU debugger. |
| |
| Copyright 2018-2020 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 <unistd.h> |
| #include <stdlib.h> |
| |
| static void |
| breakpt () |
| { |
| asm ("" ::: "memory"); |
| } |
| |
| static void |
| go_child () |
| { |
| breakpt (); |
| |
| while (1) |
| sleep (1); |
| } |
| |
| static void |
| go_parent () |
| { |
| breakpt (); |
| |
| while (1) |
| sleep (1); |
| } |
| |
| int |
| main () |
| { |
| pid_t pid; |
| |
| pid = fork (); |
| if (pid == -1) |
| abort (); |
| |
| if (pid == 0) |
| go_child (); |
| else |
| go_parent (); |
| |
| exit (EXIT_SUCCESS); |
| } |