From: inikep <inikep@gmail.com>
Date: Thu, 10 Mar 2016 12:18:36 +0000 (+0100)
Subject: small ratio improvement with MINMATCH=3
X-Git-Tag: v0.6.0^2~17^2~72^2~3
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=b0c640d9343b8d04b93a137cca5640dedeecd295;p=thirdparty%2Fzstd.git

small ratio improvement with MINMATCH=3
---

diff --git a/lib/zstd_opt.h b/lib/zstd_opt.h
index f89b737a0..aa0b70237 100644
--- a/lib/zstd_opt.h
+++ b/lib/zstd_opt.h
@@ -244,8 +244,8 @@ static U32 ZSTD_insertBtAndGetAllMatches (
 
     if (minMatch == 3) { /* HC3 match finder */
         U32 matchIndex3 = ZSTD_insertAndFindFirstIndexHash3 (zc, ip);
-
-        if (matchIndex3>windowLow) {
+        
+        if (matchIndex3>windowLow && (current - matchIndex3 < (1<<18))) {
             const BYTE* match;
             size_t currentMl=0;
             if ((!extDict) || matchIndex3 >= dictLimit) {