diff --git a/testsuites/libtests/POSIX/flockfile.c b/testsuites/libtests/POSIX/flockfile.c
new file mode 100644
index 0000000000..7ab69a49f2
--- /dev/null
+++ b/testsuites/libtests/POSIX/flockfile.c
@@ -0,0 +1,16 @@
+/*
+ * Copyright (c) 2009 by
+ * Ralf Corsépius, Ulm, Germany. All rights reserved.
+ *
+ * Permission to use, copy, modify, and distribute this software
+ * is freely granted, provided that this notice is preserved.
+ */
+
+#include <stdio.h>
+
+int main(void)
+{
+  FILE *file = NULL;
+  flockfile(file);
+  return 0;
+}
diff --git a/testsuites/libtests/POSIX/ftrylockfile.c b/testsuites/libtests/POSIX/ftrylockfile.c
new file mode 100644
index 0000000000..423e6bfad7
--- /dev/null
+++ b/testsuites/libtests/POSIX/ftrylockfile.c
@@ -0,0 +1,16 @@
+/*
+ * Copyright (c) 2009 by
+ * Ralf Corsépius, Ulm, Germany. All rights reserved.
+ *
+ * Permission to use, copy, modify, and distribute this software
+ * is freely granted, provided that this notice is preserved.
+ */
+
+#include <stdio.h>
+
+int main(void)
+{
+  FILE *file = NULL;
+  int ret = ftrylockfile(file);
+  return ret;
+}
diff --git a/testsuites/libtests/POSIX/funlockfile.c b/testsuites/libtests/POSIX/funlockfile.c
new file mode 100644
index 0000000000..93017a464c
--- /dev/null
+++ b/testsuites/libtests/POSIX/funlockfile.c
@@ -0,0 +1,16 @@
+/*
+ * Copyright (c) 2009 by
+ * Ralf Corsépius, Ulm, Germany. All rights reserved.
+ *
+ * Permission to use, copy, modify, and distribute this software
+ * is freely granted, provided that this notice is preserved.
+ */
+
+#include <stdio.h>
+
+int main(void)
+{
+  FILE *file = NULL;
+  funlockfile(file);
+  return 0;
+}