AuroraMiddleware/lz4
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restored nullifying output

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to counter possible (offset==0)
This commit is contained in:
Yann Collet 2018-09-10 16:22:16 -07:00
parent 32272f9866
commit 63fc6fbf7e
1 changed files with 5 additions and 1 deletions
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6
lib/lz4.c
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@ -1536,7 +1536,11 @@ LZ4_decompress_generic(
_copy_match:
if ((checkOffset) && (unlikely(match + dictSize < lowPrefix))) goto _output_error; /* Error : offset outside buffers */
// LZ4_write32(op, (U32)offset); /* costs ~1%; silence an msan warning when offset==0 */ /* note : no longer valid with partialDecoding, since there is no guarantee that at least 4 bytes are available */
if (!partialDecoding) {
assert(oend > op);
assert(oend - op >= 4);
LZ4_write32(op, 0); /* silence an msan warning when offset==0; costs <1%; */
} /* note : when partialDecoding, there is no guarantee that at least 4 bytes remain available in output buffer */
if (length == ML_MASK) {
unsigned s;