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-rw-r--r--htl/tests/test-12.c45
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diff --git a/htl/tests/test-12.c b/htl/tests/test-12.c
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+/* Test concurrency level.
+ Copyright (C) 2000-2018 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
+ <http://www.gnu.org/licenses/>. */
+
+#define _GNU_SOURCE
+
+#include <pthread.h>
+#include <assert.h>
+#include <error.h>
+#include <errno.h>
+
+int
+main (int argc, char **argv)
+{
+ int i;
+ int err;
+
+ i = pthread_getconcurrency ();
+ assert (i == 0);
+
+ err = pthread_setconcurrency (-1);
+ assert (err == EINVAL);
+
+ err = pthread_setconcurrency (4);
+ assert (err == 0);
+
+ i = pthread_getconcurrency ();
+ assert (i == 4);
+
+ return 0;
+}