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Fixed : dictBuilder fails if first sample is too small

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Yann Collet
2016-06-22 11:05:34 +02:00
parent 8d30cd562a
commit 23042929da
1 changed files with 36 additions and 33 deletions
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lib/dictBuilder/zdict.c
+7 -4
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@@ -584,12 +584,15 @@ static void ZDICT_countEStats(EStats_ress_t esr,
U32* countLit, U32* offsetcodeCount, U32* matchlengthCount, U32* litlengthCount, U32* repOffsets, U32* countLit, U32* offsetcodeCount, U32* matchlengthCount, U32* litlengthCount, U32* repOffsets,
const void* src, size_t srcSize) const void* src, size_t srcSize)
{ {
const seqStore_t* seqStorePtr; size_t cSize;
if (srcSize > ZSTD_BLOCKSIZE_MAX) srcSize = ZSTD_BLOCKSIZE_MAX; /* protection vs large samples */ if (srcSize > ZSTD_BLOCKSIZE_MAX) srcSize = ZSTD_BLOCKSIZE_MAX; /* protection vs large samples */
ZSTD_copyCCtx(esr.zc, esr.ref); ZSTD_copyCCtx(esr.zc, esr.ref);
ZSTD_compressBlock(esr.zc, esr.workPlace, ZSTD_BLOCKSIZE_MAX, src, srcSize); cSize = ZSTD_compressBlock(esr.zc, esr.workPlace, ZSTD_BLOCKSIZE_MAX, src, srcSize);
seqStorePtr = ZSTD_getSeqStore(esr.zc); if (ZSTD_isError(cSize)) { DISPLAYLEVEL(1, "warning : could not compress sample size %u \n", (U32)srcSize); return; }
if (cSize) { /* if == 0; block is not compressible */
const seqStore_t* seqStorePtr = ZSTD_getSeqStore(esr.zc);
/* literals stats */ /* literals stats */
{ const BYTE* bytePtr; { const BYTE* bytePtr;
@@ -625,7 +628,7 @@ static void ZDICT_countEStats(EStats_ress_t esr,
repOffsets[offset1] += 3; repOffsets[offset1] += 3;
repOffsets[offset2] += 1; repOffsets[offset2] += 1;
} }
}
} }
/* /*