1 /* This testcase is part of GDB, the GNU debugger. 2 3 Copyright 2018-2019 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 <sys/types.h> 20 #include <unistd.h> 21 22 /* This is set to 1 by the debugger post attach to continue to the 23 watchpoint trigger. */ 24 volatile int should_continue = 0; 25 /* The variable to place a watchpoint on. */ 26 volatile int watched_variable = 0; 27 28 int 29 main (void) 30 { 31 unsigned int counter = 1; 32 int mypid = getpid (); 33 34 /* Wait for the debugger to attach, but not indefinitely so this 35 test program is not left hanging around. */ 36 for (counter = 0; !should_continue && counter < 100; counter++) 37 sleep (1); /* pidacquired */ 38 39 /* Trigger a watchpoint. */ 40 watched_variable = 4; 41 printf ("My variable is %d\n", watched_variable); 42 return 0; 43 } 44