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      1 /* This testcase is part of GDB, the GNU debugger.
      2 
      3    Copyright 2022-2024 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 <pthread.h>
     19 #include <unistd.h>
     20 #include <stddef.h>
     21 
     22 static pthread_barrier_t barrier;
     23 
     24 static void *
     25 thread_func (void *arg)
     26 {
     27   pthread_barrier_wait (&barrier);
     28   return NULL;
     29 }
     30 
     31 int
     32 main ()
     33 {
     34   pthread_t thread;
     35   int ret;
     36 
     37   alarm (30);
     38 
     39   pthread_barrier_init (&barrier, NULL, 2);
     40 
     41   /* We run to this line below, and then issue "next 3".  That should
     42      step over the 3 lines below and land on the return statement.  If
     43      GDB prematurely stops the thread_func thread after the first of
     44      the 3 nexts (and never resumes it again), then the join won't
     45      ever return.  */
     46   pthread_create (&thread, NULL, thread_func, NULL); /* set break here */
     47   pthread_barrier_wait (&barrier);
     48   pthread_join (thread, NULL);
     49 
     50   return 0;
     51 }
     52