complementary code comments

on variables used / impacted during maxDist check
2019-05-28 14:12:16 -07:00
parent 4baecdf72a
commit 6453f8158f
3 changed files with 6 additions and 3 deletions
@@ -2866,10 +2866,13 @@ static size_t ZSTD_compress_frameChunk (ZSTD_CCtx* cctx,
            ZSTD_reduceIndex(cctx, correction);
            if (ms->nextToUpdate < correction) ms->nextToUpdate = 0;
            else ms->nextToUpdate -= correction;
+            /* invalidate dictionaries on overflow correction */
            ms->loadedDictEnd = 0;
            ms->dictMatchState = NULL;
        }
+
        ZSTD_window_enforceMaxDist(&ms->window, ip + blockSize, maxDist, &ms->loadedDictEnd, &ms->dictMatchState);
+        /* Ensure hash/chain table insertion resumes no sooner than lowlimit */
        if (ms->nextToUpdate < ms->window.lowLimit) ms->nextToUpdate = ms->window.lowLimit;

        {   size_t cSize = ZSTD_compressBlock_internal(cctx,