From: Yann Collet <cyan@fb.com>
Date: Sat, 6 Jan 2018 19:50:36 +0000 (+0100)
Subject: fixed msan test
X-Git-Tag: v1.3.4~1^2~87^2~2
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=b17fb488b0fd57e7b3c028a54ffd87c1f6878045;p=thirdparty%2Fzstd.git

fixed msan test

a pointer calculation was wrong in a corner case
---

diff --git a/lib/compress/zstd_lazy.c b/lib/compress/zstd_lazy.c
index 7261cffcf..4af843d1b 100644
--- a/lib/compress/zstd_lazy.c
+++ b/lib/compress/zstd_lazy.c
@@ -122,7 +122,7 @@ static void ZSTD_insertDUBT1(ZSTD_CCtx* zc,
         if ( (!extDict)
           || (matchIndex+matchLength >= dictLimit)  /* both in current segment*/
           || (current < dictLimit) /* both in extDict */) {
-            const BYTE* const mBase = !extDict || (matchIndex >= dictLimit) ? base : dictBase;
+            const BYTE* const mBase = !extDict || ((matchIndex+matchLength) >= dictLimit) ? base : dictBase;
             assert( (matchIndex+matchLength >= dictLimit)   /* might be wrong if extDict is incorrectly set to 0 */
                  || (current < dictLimit) );
             match = mBase + matchIndex;