diff --git a/testsuites/psxtests/ChangeLog b/testsuites/psxtests/ChangeLog
index 584a9628b3..cde955bd33 100644
--- a/testsuites/psxtests/ChangeLog
+++ b/testsuites/psxtests/ChangeLog
@@ -1,3 +1,8 @@
+2009-07-04	Santosh G Vattam <vattam.santosh@gmail.com>
+
+	* psxrwlock01/psxrwlock01.scn, psxrwlock01/test.c: Add test case for
+	obtaining an rwlock and then releasing it twice.
+
 2009-07-03	Joel Sherrill <joel.sherrill@OARcorp.com>
 
 	* psxenosys/init.c, psxenosys/psxenosys.scn: Add test of vfork stub.
diff --git a/testsuites/psxtests/psxrwlock01/psxrwlock01.scn b/testsuites/psxtests/psxrwlock01/psxrwlock01.scn
index 4a4c7d05a8..578c5f54c7 100644
--- a/testsuites/psxtests/psxrwlock01/psxrwlock01.scn
+++ b/testsuites/psxtests/psxrwlock01/psxrwlock01.scn
@@ -79,4 +79,7 @@ pthread_rwlock_timedwrlock( &RWLock, &abstime) -- ETIMEDOUT
 pthread_rwlock_timedrdlock( &RWLock, &abstime) -- in past -- OK
 pthread_rwlock_timedwrlock( &RWLock, &abstime) -- in past -- OK
 pthread_rwlock_destroy( &RWLock ) -- OK
+pthread_rwlock_init( &rwlock, NULL ) -- OK
+pthread_rwlock_unlock ( &rwlock ) -- OK
+pthread_rwlock_unlock ( &rwlock ) -- OK
 *** END OF POSIX RWLOCK TEST 01 ***
diff --git a/testsuites/psxtests/psxrwlock01/test.c b/testsuites/psxtests/psxrwlock01/test.c
index 404385e9a3..fa5a92bc1b 100644
--- a/testsuites/psxtests/psxrwlock01/test.c
+++ b/testsuites/psxtests/psxrwlock01/test.c
@@ -407,6 +407,20 @@ int main(
   status = pthread_rwlock_destroy( &RWLock );
   assert( status == 0 );
 
+  /*************** OBTAIN A LOCK AND THEN RELEASE IT TWICE ***************/
+
+  puts( "pthread_rwlock_init( &rwlock, NULL ) -- OK" );
+  status = pthread_rwlock_init( &rwlock, NULL );
+  assert( status == 0 );
+  assert( rwlock != 0 );
+
+  puts( "pthread_rwlock_unlock ( &rwlock ) -- OK" );
+  status = pthread_rwlock_unlock( &rwlock );
+  assert( status == 0 );
+  
+  puts( "pthread_rwlock_unlock ( &rwlock ) -- OK" );
+  status = pthread_rwlock_unlock( &rwlock );
+  assert( status == 0 );
 
   /*************** END OF TEST *****************/
   puts( "*** END OF POSIX RWLOCK TEST 01 ***" );