diff -p -up gzip-1.3.12/zdiff.in.zdiff-compressed gzip-1.3.12/zdiff.in
--- gzip-1.3.12/zdiff.in.zdiff-compressed	2007-02-08 22:54:59.000000000 +0000
+++ gzip-1.3.12/zdiff.in	2008-01-10 15:01:15.000000000 +0000
@@ -104,7 +104,7 @@ elif test $# -eq 2; then
 			  exec 4>&1
 			  (gzip -cdfq -- "$1" 4>&-; echo $? >&4) 3>&- |
 			    ( (gzip -cdfq -- "$2" 4>&-; echo $? >&4) 3>&- 5<&- </dev/null |
-			       eval "$cmp" /dev/fd/5 -) 5<&0
+			       eval "$cmp" /dev/fd/5 - >&3) 5<&0
 			)
 			case $gzip_status in
 			  *[1-9]*) gzip_status=1;;