1 files changed, 56 insertions, 0 deletions
diff --git a/htl/tests/test-2.c b/htl/tests/test-2.c
new file mode 100644
index 0000000000..1194a3427a
--- /dev/null
+++ b/htl/tests/test-2.c
@@ -0,0 +1,56 @@
+/* Test detachability.
+   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 Library General Public License as
+   published by the Free Software Foundation; either version 2 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
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If
+   not, see <http://www.gnu.org/licenses/>.  */
+
+#define _GNU_SOURCE
+
+#include <pthread.h>
+#include <assert.h>
+#include <error.h>
+#include <errno.h>
+#include <unistd.h>
+
+void *
+thread (void *arg)
+{
+  while (1)
+    sched_yield ();
+}
+
+int
+main (int argc, char **argv)
+{
+  int err;
+  pthread_t tid;
+  void *ret;
+
+  err = pthread_create (&tid, 0, thread, 0);
+  if (err)
+    error (1, err, "pthread_create");
+
+  err = pthread_detach (tid);
+  if (err)
+    error (1, err, "pthread_detach");
+
+  err = pthread_detach (tid);
+  assert (err == EINVAL);
+
+  err = pthread_join (tid, &ret);
+  assert (err == EINVAL);
+
+  return 0;
+}