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Merge pull request #478 from terrelln/wildcopy-ub

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Fix execSequence wildcopy undefined behavior
This commit is contained in:
Yann Collet
2016-12-13 11:33:00 +01:00
committed by GitHub
parent faaebebb1a 064a143520
commit 35168679bd
9 changed files with 17 additions and 17 deletions
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lib/decompress/zstd_decompress.c
+2 -2
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@@ -997,7 +997,7 @@ size_t ZSTD_execSequence(BYTE* op,
}
while (op < oMatchEnd) *op++ = *match++;
} else {
ZSTD_wildcopy(op, match, sequence.matchLength-8); /* works even if matchLength < 8 */
ZSTD_wildcopy(op, match, (ptrdiff_t)sequence.matchLength-8); /* works even if matchLength < 8 */
}
return sequenceLength;
}
@@ -1218,7 +1218,7 @@ size_t ZSTD_execSequenceLong(BYTE* op,
}
while (op < oMatchEnd) *op++ = *match++;
} else {
ZSTD_wildcopy(op, match, sequence.matchLength-8); /* works even if matchLength < 8 */
ZSTD_wildcopy(op, match, (ptrdiff_t)sequence.matchLength-8); /* works even if matchLength < 8 */
}
return sequenceLength;
}