gdb/testsuite/gdb.base/watch-read.c

   1 /* This testcase is part of GDB, the GNU debugger.
   2
   3    Copyright 2009-2017 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 volatile int global;
  19
  20 int
  21 main (void)
  22 {
  23   int foo = -1;
  24
  25   while (1)
  26     {
  27       foo = global; /* read line */
  28
  29       global = foo + 1; /* write line */
  30     }
  31
  32   return 0;
  33 }