Lines Matching refs:undef
208 undef $X;
304 $db->filter_fetch_key (undef);
305 $db->filter_store_key (undef);
306 $db->filter_fetch_value (undef);
307 $db->filter_store_value (undef);
321 undef $db ;
385 undef $db ;
404 undef $db ;
412 # test that $hash{KEY} = undef doesn't produce the warning
424 $h{ABC} = undef;
467 undef $db ;
498 $db->filter_fetch_key (undef);
499 $db->filter_store_key (undef);
500 $db->filter_fetch_value (undef);
501 $db->filter_store_value (undef);
512 undef $db ;