diff --git a/testsuites/psxtests/ChangeLog b/testsuites/psxtests/ChangeLog
index 54ce74d8e3..9055a0dd67 100644
--- a/testsuites/psxtests/ChangeLog
+++ b/testsuites/psxtests/ChangeLog
@@ -1,3 +1,8 @@
+2009-05-17	Joel Sherrill <joel.sherrill@oarcorp.com>
+
+	* psxrwlock01/psxrwlock01.scn, psxrwlock01/test.c: Add test case for
+	NULL attribute pointer on init.
+
 2009-05-17	Joel Sherrill <joel.sherrill@OARcorp.com>
 
 	* psxsem01/Makefile.am, psxsem01/init.c, psxsem01/psxsem01.scn,
diff --git a/testsuites/psxtests/psxrwlock01/psxrwlock01.scn b/testsuites/psxtests/psxrwlock01/psxrwlock01.scn
index 981020f0ca..5155dcbbb1 100644
--- a/testsuites/psxtests/psxrwlock01/psxrwlock01.scn
+++ b/testsuites/psxtests/psxrwlock01/psxrwlock01.scn
@@ -39,6 +39,8 @@ pthread_rwlockattr_init( &attr ) -- OK
 pthread_rwlock_init( &rwlock, &attr ) -- OK
 pthread_rwlock_init( &rwlock, &attr ) -- EAGAIN
 pthread_rwlock_destroy( &rwlock ) -- OK
+pthread_rwlock_init( &rwlock, NULL ) -- OK
+pthread_rwlock_destroy( &rwlock ) -- OK
 pthread_rwlock_init( &RWLock, &attr ) -- OK
 pthread_rwlock_tryrdlock(RWLock) -- OK
 Init: pthread_create - thread 1 OK
diff --git a/testsuites/psxtests/psxrwlock01/test.c b/testsuites/psxtests/psxrwlock01/test.c
index 270e512a55..a03e032235 100644
--- a/testsuites/psxtests/psxrwlock01/test.c
+++ b/testsuites/psxtests/psxrwlock01/test.c
@@ -274,6 +274,15 @@ int main(
   status = pthread_rwlock_destroy( &rwlock );
   assert( status == 0 );
 
+  /********* CREATE RWLOCK WITH DEFAULT ATTRIBUTES AND DESTROY IT *********/
+  puts( "pthread_rwlock_init( &rwlock, NULL ) -- OK" );
+  status = pthread_rwlock_init( &rwlock, NULL );
+  assert( status == 0 );
+
+  puts( "pthread_rwlock_destroy( &rwlock ) -- OK" );
+  status = pthread_rwlock_destroy( &rwlock );
+  assert( status == 0 );
+
   /*************** CREATE THREADS AND LET THEM OBTAIN READLOCK ***************/
   puts( "pthread_rwlock_init( &RWLock, &attr ) -- OK" );
   status = pthread_rwlock_init( &RWLock, &attr );