Lines Matching refs:undef
210 undef $X;
302 $db->filter_fetch_key (undef);
303 $db->filter_store_key (undef);
304 $db->filter_fetch_value (undef);
305 $db->filter_store_value (undef);
319 undef $db ;
383 undef $db ;
402 undef $db ;
410 # test that $hash{KEY} = undef doesn't produce the warning
422 $h{ABC} = undef;
464 undef $db ;
495 $db->filter_fetch_key (undef);
496 $db->filter_store_key (undef);
497 $db->filter_fetch_value (undef);
498 $db->filter_store_value (undef);
509 undef $db ;