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Merge pull request #417 from terrelln/ubsan-failures

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Fix ubsan failures (pass NULL to memcpy)
This commit is contained in:
Yann Collet 2016-10-13 03:37:22 -07:00 committed by GitHub
commit c8b1ecf4ba
2 changed files with 7 additions and 3 deletions
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6
lib/compress/zstd_compress.c
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@ -2235,7 +2235,7 @@ static size_t ZSTD_compress_generic (ZSTD_CCtx* cctx,
BYTE* op = ostart;
U32 const maxDist = 1 << cctx->params.cParams.windowLog;
if (cctx->params.fParams.checksumFlag)
if (cctx->params.fParams.checksumFlag && srcSize)
XXH64_update(&cctx->xxhState, src, srcSize);
while (remaining) {
@ -2688,7 +2688,9 @@ ZSTD_CDict* ZSTD_createCDict_advanced(const void* dict, size_t dictSize, ZSTD_pa
return NULL;
}
memcpy(dictContent, dict, dictSize);
if (dictSize) {
memcpy(dictContent, dict, dictSize);
}
{ size_t const errorCode = ZSTD_compressBegin_advanced(cctx, dictContent, dictSize, params, 0);
if (ZSTD_isError(errorCode)) {
ZSTD_free(dictContent, customMem);

4
lib/decompress/zstd_decompress.c
View File

@ -1402,7 +1402,9 @@ ZSTD_DDict* ZSTD_createDDict_advanced(const void* dict, size_t dictSize, ZSTD_cu
return NULL;
}
memcpy(dictContent, dict, dictSize);
if (dictSize) {
memcpy(dictContent, dict, dictSize);
}
{ size_t const errorCode = ZSTD_decompressBegin_usingDict(dctx, dictContent, dictSize);
if (ZSTD_isError(errorCode)) {
ZSTD_free(dictContent, customMem);