Lines Matching refs:undef
210 undef $X;
300 $db->filter_fetch_key (undef);
301 $db->filter_store_key (undef);
302 $db->filter_fetch_value (undef);
303 $db->filter_store_value (undef);
317 undef $db ;
381 undef $db ;
400 undef $db ;
408 # test that $hash{KEY} = undef doesn't produce the warning
458 undef $db ;
489 $db->filter_fetch_key (undef);
490 $db->filter_store_key (undef);
491 $db->filter_fetch_value (undef);
492 $db->filter_store_value (undef);
503 undef $db ;