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Avoid Undefined Behavior in Match Ptr Calculation

dev
W. Felix Handte 2018-05-15 15:45:37 -04:00
parent a44ab3b475
commit 9c92223468
1 changed files with 3 additions and 3 deletions
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6
lib/compress/zstd_fast.c
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@ -99,10 +99,10 @@ size_t ZSTD_compressBlock_fast_generic(
U32 const matchIndex = hashTable[h];
const BYTE* match = base + matchIndex;
const U32 repIndex = current + 1 - offset_1;
const BYTE* repBase = (dictMode == ZSTD_dictMatchState
const BYTE* repMatch = (dictMode == ZSTD_dictMatchState
&& repIndex < prefixLowestIndex) ?
dictBase - dictIndexDelta : base;
const BYTE* repMatch = repBase + repIndex;
dictBase + (repIndex - dictIndexDelta) :
base + repIndex;
hashTable[h] = current; /* update hash table */
if (dictMode == ZSTD_dictMatchState