ddidderr/zstd-rs
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[lib] Fix bug in loading LDM dictionary in MT mode

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Exposed when loading a dictionary < LDM minMatch bytes in MT mode.

Test Plan:
```
CC=clang make -j zstreamtest MOREFLAGS="-O0 -fsanitize=address"
./zstreamtest -vv -i100000000 -t1 --newapi -s7065 -t3925297
```

TODO: Add an explicit test that loads a small dictionary in MT mode
This commit is contained in:
Nick Terrell
2020-05-14 11:52:28 -07:00
parent 0208eeccd6
commit add7ed2d4a
2 changed files with 8 additions and 6 deletions
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lib/compress/zstd_compress.c
+1 -1
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@@ -2846,7 +2846,7 @@ static size_t ZSTD_loadDictionaryContent(ZSTD_matchState_t* ms,
ZSTD_overflowCorrectIfNeeded(ms, ws, params, ip, ichunk);
if (params->ldmParams.enableLdm && ls != NULL && srcSize >= params->ldmParams.minMatchLength)
if (params->ldmParams.enableLdm && ls != NULL)
ZSTD_ldm_fillHashTable(ls, (const BYTE*)src, (const BYTE*)src + srcSize, &params->ldmParams);
switch(params->cParams.strategy)