1 files changed, 49 insertions, 0 deletions
diff --git a/tests/test-1.c b/tests/test-1.c
new file mode 100644
index 00000000..86c7c97e
--- /dev/null
+++ b/tests/test-1.c
@@ -0,0 +1,49 @@
+#define _GNU_SOURCE
+
+#include <pthread.h>
+#include <unistd.h>
+#include <error.h>
+#include <errno.h>
+#include <stdio.h>
+
+#define THREADS 500
+
+void *
+foo (void *arg)
+{
+  pthread_mutex_t *mutex = arg;
+  pthread_mutex_lock (mutex);
+  pthread_mutex_unlock (mutex);
+  return mutex;
+}
+
+int
+main (int argc, char **argv)
+{
+  int i;
+  error_t err;
+  pthread_t tid[THREADS];
+  pthread_mutex_t mutex[THREADS];
+
+  for (i = 0; i < THREADS; i ++)
+    {
+      mutex[i] = PTHREAD_MUTEX_INITIALIZER;
+      pthread_mutex_lock (&mutex[i]);
+      err = pthread_create (&tid[i], 0, foo, &mutex[i]);
+      if (err)
+	error (1, err, "pthread_create");
+      sched_yield ();
+    }
+
+  for (i = THREADS - 1; i >= 0; i --)
+    {
+      void *ret;
+      pthread_mutex_unlock (&mutex[i]);
+      err = pthread_join (tid[i], &ret);
+      if (err)
+	error (1, err, "pthread_join");
+      assert (ret == &mutex[i]);
+    }
+
+  return 0;
+}