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fixed : legacy decoders v04 and v05

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This commit is contained in:
Yann Collet
2017-01-30 10:45:58 -08:00
parent cc3d1bc262
commit b5fd15ccb2
2 changed files with 12 additions and 10 deletions
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lib/legacy/zstd_v05.c
+4 -2
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@@ -3230,7 +3230,8 @@ static void ZSTDv05_decodeSequence(seq_t* seq, seqState_t* seqState)
if (litLength&1) litLength>>=1, dumps += 3;
else litLength = (U16)(litLength)>>1, dumps += 2;
}
if (dumps >= de) { dumps = de-1; litLength = MaxLL+255; } /* late correction, to avoid read overflow (data is now corrupted anyway) */
if (dumps > de) { litLength = MaxLL+255; } /* late correction, to avoid using uninitialized memory */
if (dumps >= de) { dumps = de-1; } /* late correction, to avoid read overflow (data is now corrupted anyway) */
}
/* Offset */
@@ -3263,7 +3264,8 @@ static void ZSTDv05_decodeSequence(seq_t* seq, seqState_t* seqState)
if (matchLength&1) matchLength>>=1, dumps += 3;
else matchLength = (U16)(matchLength)>>1, dumps += 2;
}
if (dumps >= de) { dumps = de-1; matchLength = MaxML+255; } /* late correction, to avoid read overflow (data is now corrupted anyway) */
if (dumps > de) { matchLength = MaxML+255; } /* late correction, to avoid using uninitialized memory */
if (dumps >= de) { dumps = de-1; } /* late correction, to avoid read overflow (data is now corrupted anyway) */
}
matchLength += MINMATCH;