From: Yann Collet <yann.collet.73@gmail.com>
Date: Tue, 12 Jul 2016 11:03:48 +0000 (+0200)
Subject: fixed dfast strategy
X-Git-Tag: v0.7.4^2~31^2
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=73d74a05b9cc1f2e8655d48da8d6c79cd57efa42;p=thirdparty%2Fzstd.git

fixed dfast strategy
---

diff --git a/lib/compress/zstd_compress.c b/lib/compress/zstd_compress.c
index 133899ef9..70f17b537 100644
--- a/lib/compress/zstd_compress.c
+++ b/lib/compress/zstd_compress.c
@@ -1544,7 +1544,7 @@ static void ZSTD_compressBlock_doubleFast_extDict_generic(ZSTD_CCtx* ctx,
                 offset_2 = offset_1;
                 offset_1 = offset;
                 ZSTD_storeSeq(seqStorePtr, ip-anchor, anchor, offset + ZSTD_REP_MOVE, mLength-MINMATCH);
-            } else if ((matchIndex > lowestIndex) && (MEM_read32(match) != MEM_read32(ip))) {
+            } else if ((matchIndex > lowestIndex) && (MEM_read32(match) == MEM_read32(ip))) {
                 const BYTE* matchEnd = matchIndex < dictLimit ? dictEnd : iend;
                 const BYTE* lowMatchPtr = matchIndex < dictLimit ? dictStart : lowPrefixPtr;
                 U32 offset;
@@ -2410,7 +2410,7 @@ static size_t ZSTD_compress_generic (ZSTD_CCtx* cctx,
     BYTE* op = ostart;
     const U32 maxDist = 1 << cctx->params.cParams.windowLog;
     ZSTD_stats_t* stats = &cctx->seqStore.stats;
-    ZSTD_statsInit(stats);
+    ZSTD_statsInit(stats);   /* debug only */
 
     if (cctx->params.fParams.checksumFlag)
         XXH64_update(&cctx->xxhState, src, srcSize);