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/* This testcase is part of GDB, the GNU debugger.
Copyright 2015-2021 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
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 <>. */
#include <assert.h>
#include <pthread.h>
#include <unistd.h>
/* Number of threads. Each thread continuously steps over a
breakpoint. */
#define NTHREADS 10
pthread_t threads[NTHREADS];
pthread_barrier_t barrier;
/* Used to create a conditional breakpoint that always fails. */
volatile int zero;
static void *
thread_func (void *arg)
pthread_barrier_wait (&barrier);
while (1)
usleep (1); /* set break here */
return NULL;
main (void)
int ret;
int i;
/* Don't run forever. */
alarm (180);
pthread_barrier_init (&barrier, NULL, NTHREADS + 1);
/* Start the threads that constantly hits a conditional breakpoint
that needs to be stepped over. */
for (i = 0; i < NTHREADS; i++)
ret = pthread_create (&threads[i], NULL, thread_func, NULL);
assert (ret == 0);
/* Wait until all threads are up and running. */
pthread_barrier_wait (&barrier);
/* Let them start hitting the breakpoint. */
usleep (100);
/* Exit abruptly. */
return 0;