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      1 /* This testcase is part of GDB, the GNU debugger.
      2 
      3    Copyright 2021-2024 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 <unistd.h>
     19 
     20 static unsigned int global_counter = 1;
     21 
     22 static volatile unsigned int __attribute__((used)) global_var = 123;
     23 
     24 static void
     25 maybe_stop_here ()
     26 {
     27 }
     28 
     29 int
     30 main (void)
     31 {
     32   global_counter = 1;
     33 
     34   while (global_counter > 0)
     35     {
     36       global_counter++;
     37 
     38       /* Less than 1s, so the counter increments at least once while
     39 	 the .exp sleep 1s, but slow enough that the counter doesn't
     40 	 wrap in 1s.  */
     41       usleep (5000);
     42 
     43       maybe_stop_here ();
     44     }
     45 
     46   return 0;
     47 }
     48