Index: dir.cxx
===================================================================
RCS file: /cvs/ecos/ecos/packages/io/fileio/current/src/dir.cxx,v
retrieving revision 1.6
diff -u -5 -p -r1.6 dir.cxx
--- dir.cxx	1 Dec 2003 14:30:34 -0000	1.6
+++ dir.cxx	20 Dec 2003 11:29:52 -0000
@@ -179,10 +179,15 @@ extern int readdir_r( DIR *dirp, struct 
     int fd = (int)dirp;    
     ssize_t res;
 
     *result = NULL;
     
+    if( NULL == dirp )
+    {
+        FILEIO_RETURN_VALUE( EINVAL );
+    }
+    
     res = read( fd, (void *)entry, sizeof(struct dirent));
 
     if( res < 0 )
     {
         FILEIO_RETURN_VALUE( errno );