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bfe68fe3c4
__libc_signal_restore_set was in the wrong place: It also ran when setjmp returned the second time (after pthread_exit or pthread_cancel). This is observable with blocked pending signals during thread exit. Fixes commitb3cae39dcb("nptl: Start new threads with all signals blocked [BZ #25098]"). Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org> (cherry picked from commite186fc5a31)
46 lines
1.5 KiB
C
46 lines
1.5 KiB
C
/* Test that pending signals are not delivered on thread exit (bug 28607).
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Copyright (C) 2021 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library 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 GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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<https://www.gnu.org/licenses/>. */
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/* Due to bug 28607, pthread_kill (or pthread_cancel) restored the
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signal mask during during thread exit, triggering the delivery of a
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blocked pending signal (SIGUSR1 in this test). */
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#include <support/xthread.h>
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#include <support/xsignal.h>
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static void *
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threadfunc (void *closure)
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{
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sigset_t sigmask;
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sigfillset (&sigmask);
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xpthread_sigmask (SIG_SETMASK, &sigmask, NULL);
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xpthread_kill (pthread_self (), SIGUSR1);
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pthread_exit (NULL);
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return NULL;
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}
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static int
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do_test (void)
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{
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pthread_t thr = xpthread_create (NULL, threadfunc, NULL);
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xpthread_join (thr);
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return 0;
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}
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#include <support/test-driver.c>
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