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zstd_opt.h: fixed checking of rep codes (2)

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inikep 2016-07-29 16:45:39 +02:00
parent c4b5106f7f
commit 6b68ba2079
1 changed files with 1 additions and 1 deletions
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2
lib/compress/zstd_opt.h
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@ -885,7 +885,7 @@ void ZSTD_compressBlock_opt_extDict_generic(ZSTD_CCtx* ctx,
const U32 repIndex = (U32)(current+cur - opt[cur].rep[i]); const U32 repIndex = (U32)(current+cur - opt[cur].rep[i]);
const BYTE* const repBase = repIndex < dictLimit ? dictBase : base; const BYTE* const repBase = repIndex < dictLimit ? dictBase : base;
const BYTE* const repMatch = repBase + repIndex; const BYTE* const repMatch = repBase + repIndex;
if ((rep[i]<(U32)(ip-prefixStart)) if ((opt[cur].rep[i]<(U32)(ip-prefixStart))
&& (((U32)((dictLimit-1) - repIndex) >= 3) & (repIndex>lowestIndex)) /* intentional overflow */ && (((U32)((dictLimit-1) - repIndex) >= 3) & (repIndex>lowestIndex)) /* intentional overflow */
&& (MEM_readMINMATCH(inr, minMatch) == MEM_readMINMATCH(repMatch, minMatch)) ) { && (MEM_readMINMATCH(inr, minMatch) == MEM_readMINMATCH(repMatch, minMatch)) ) {
/* repcode detected */ /* repcode detected */