1 files changed, 66 insertions, 0 deletions
diff --git a/sysdeps/pthread/tst-cond27.c b/sysdeps/pthread/tst-cond27.c
new file mode 100644
index 0000000000..c8142abf9e
--- /dev/null
+++ b/sysdeps/pthread/tst-cond27.c
@@ -0,0 +1,66 @@
+/* Test pthread_cond_clockwait timeout.
+
+   Copyright (C) 2019-2020 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <https://www.gnu.org/licenses/>.  */
+
+#include <errno.h>
+#include <pthread.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <time.h>
+#include <sys/time.h>
+#include <support/check.h>
+#include <support/timespec.h>
+#include <support/xthread.h>
+
+
+static pthread_mutex_t mut = PTHREAD_ERRORCHECK_MUTEX_INITIALIZER_NP;
+static pthread_cond_t cond = PTHREAD_COND_INITIALIZER;
+
+
+static int
+do_test_clock (clockid_t clockid)
+{
+  /* Get the mutex.  */
+  xpthread_mutex_lock (&mut);
+
+  /* Waiting for the condition will fail.  But we want the timeout here.  */
+  const struct timespec ts_now = xclock_now (clockid);
+  const struct timespec ts_timeout =
+    timespec_add (ts_now, make_timespec (0, 500000000));
+
+  /* In theory pthread_cond_clockwait could return zero here due to
+     spurious wakeup. However that can't happen without a signal or an
+     additional waiter.  */
+  TEST_COMPARE (pthread_cond_clockwait (&cond, &mut, clockid, &ts_timeout),
+                ETIMEDOUT);
+
+  xpthread_mutex_unlock (&mut);
+
+  return 0;
+}
+
+static int
+do_test (void)
+{
+  do_test_clock (CLOCK_MONOTONIC);
+  do_test_clock (CLOCK_REALTIME);
+  return 0;
+}
+
+#include <support/test-driver.c>