83e97ed023
This adds a kfailed test that has the whole process exit just while several threads continuously step over a breakpoint. Usually, the process exits just while GDB or GDBserver is handling the breakpoint hit. In other words, the process disappears while the event thread is (ptrace-) stopped. This exposes several issues in GDB and GDBserver. Errors, crashes, etc. I fixed some of these issues recently, but there's a lot more to do. It's a bit like playing whack-a-mole at the moment. You fix an issue, which then exposes several others. E.g., with the native target, you get (among other errors): (...) [New Thread 0x7ffff47b9700 (LWP 18077)] [New Thread 0x7ffff3fb8700 (LWP 18078)] [New Thread 0x7ffff37b7700 (LWP 18079)] Cannot find user-level thread for LWP 18076: generic error (gdb) KFAIL: gdb.threads/process-dies-while-handling-bp.exp: non_stop=on: cond_bp_target=1: inferior 1 exited (prompt) (PRMS: gdb/18749) gdb/testsuite/ChangeLog: 2015-08-06 Pedro Alves <palves@redhat.com> PR gdb/18749 * gdb.threads/process-dies-while-handling-bp.c: New file. * gdb.threads/process-dies-while-handling-bp.exp: New file.
73 lines
1.7 KiB
C
73 lines
1.7 KiB
C
/* This testcase is part of GDB, the GNU debugger.
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Copyright 2015 Free Software Foundation, Inc.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>. */
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#include <assert.h>
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#include <pthread.h>
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#include <unistd.h>
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/* Number of threads. Each thread continuously steps over a
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breakpoint. */
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#define NTHREADS 10
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pthread_t threads[NTHREADS];
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pthread_barrier_t barrier;
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/* Used to create a conditional breakpoint that always fails. */
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volatile int zero;
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static void *
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thread_func (void *arg)
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{
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pthread_barrier_wait (&barrier);
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while (1)
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{
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usleep (1); /* set break here */
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}
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return NULL;
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}
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int
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main (void)
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{
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int ret;
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int i;
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/* Don't run forever. */
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alarm (180);
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pthread_barrier_init (&barrier, NULL, NTHREADS + 1);
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/* Start the threads that constantly hits a conditional breakpoint
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that needs to be stepped over. */
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for (i = 0; i < NTHREADS; i++)
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{
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ret = pthread_create (&threads[i], NULL, thread_func, NULL);
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assert (ret == 0);
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}
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/* Wait until all threads are up and running. */
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pthread_barrier_wait (&barrier);
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/* Let them start hitting the breakpoint. */
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usleep (100);
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/* Exit abruptly. */
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return 0;
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}
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