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51 lines
1.5 KiB
C
51 lines
1.5 KiB
C
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/* Test that __read_chk is a cancellation point (BZ #29274)
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Copyright (C) 2022 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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#include <stdint.h>
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#include <support/xunistd.h>
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#include <support/xthread.h>
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static int pipe_fds[2];
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static pthread_barrier_t barrier;
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static void *
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read_thread (void *n)
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{
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xpthread_barrier_wait (&barrier);
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char c;
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/* This call should be forwarded to __read_chk because the buffer size
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is known, but the read length is non-constant. */
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if (read (pipe_fds[0], &c, (uintptr_t) n) != 1)
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return (void *) -1L;
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return 0;
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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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xpthread_barrier_init (&barrier, 0, 2);
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xpipe (pipe_fds);
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pthread_t thr = xpthread_create (0, read_thread, (void *) 1L);
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xpthread_barrier_wait (&barrier);
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xpthread_cancel (thr);
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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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