ddidderr/zstd-rs
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

[lib] Fix bug in loading LDM dictionary in MT mode

Browse Source 
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
Download Patch File Download Diff File Expand all files Collapse all files
lib/compress/zstd_ldm.c
+7 -5
View File
@@ -228,11 +228,13 @@ void ZSTD_ldm_fillHashTable(
ldmState_t* state, const BYTE* ip,
const BYTE* iend, ldmParams_t const* params)
{
U64 startingHash = ZSTD_rollingHash_compute(ip, params->minMatchLength);
ZSTD_ldm_fillLdmHashTable(
state, startingHash, ip, iend - params->minMatchLength, state->window.base,
params->hashLog - params->bucketSizeLog,
*params);
if ((size_t)(iend - ip) >= params->minMatchLength) {
U64 startingHash = ZSTD_rollingHash_compute(ip, params->minMatchLength);
ZSTD_ldm_fillLdmHashTable(
state, startingHash, ip, iend - params->minMatchLength, state->window.base,
params->hashLog - params->bucketSizeLog,
*params);
}
}