X-Git-Url: http://gb7djk.dxcluster.net/gitweb/gitweb.cgi?a=blobdiff_plain;f=perl%2FDXUtil.pm;h=5edb1994a3ac80f3d496c6d0bc61b5364cf3abb6;hb=36fb54df677f2db28b1e8ea098d5d492ad872896;hp=7d9e63a97b89dde5c9e7cf4e90d36eda0a1cd169;hpb=44d90466304eae7d7aab0f375ac4c07a3f37b586;p=spider.git

diff --git a/perl/DXUtil.pm b/perl/DXUtil.pm
index 7d9e63a9..5edb1994 100644
--- a/perl/DXUtil.pm
+++ b/perl/DXUtil.pm
@@ -549,7 +549,7 @@ sub difft
 	if (ref $b eq 'ARRAY') {
 		$t = $b->[1] - $b->[0];
 	} else {
-		if ($adds && $adds >= $b) {
+		if ($adds && $adds =~ /^\d+$/ && $adds >= $b) {
 			$t = $adds - $b;
 			$adds = shift;
 		} else {
@@ -572,6 +572,7 @@ sub difft
 		$out .= sprintf ("%s${s}s", $adds?' ':'') if $s;
 		$out ||= sprintf ("%s0s", $adds?' ':'');
 	}
+	$out = '0s' unless length $out;
 	return $out;
 }