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Fix static analyze error, use proper bounds for dictEnd

dev
Sen Huang 2019-11-07 16:24:55 -05:00
parent d06b90692b
commit d9c475f3b3
2 changed files with 6 additions and 4 deletions
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3
lib/compress/zstd_compress.c
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@ -2772,8 +2772,9 @@ size_t ZSTD_loadCEntropy(ZSTD_compressedBlockState_t* bs, void* workspace,
short* offcodeNCount, unsigned* offcodeMaxValue,
const void* const dict, size_t dictSize)
{
const BYTE* dictPtr = (const BYTE*)dict + 8; /* skip magic num and dict ID */
const BYTE* dictPtr = (const BYTE*)dict; /* skip magic num and dict ID */
const BYTE* const dictEnd = dictPtr + dictSize;
dictPtr += 8;
{ unsigned maxSymbolValue = 255;
size_t const hufHeaderSize = HUF_readCTable((HUF_CElt*)bs->entropy.huf.CTable, &maxSymbolValue, dictPtr, dictEnd-dictPtr);

7
lib/dictBuilder/zdict.c
View File

@ -107,14 +107,15 @@ size_t ZDICT_getDictHeaderSize(const void* dictBuffer, size_t dictSize)
{ size_t headerSize;
unsigned offcodeMaxValue = MaxOff;
ZSTD_compressedBlockState_t* bs = (ZSTD_compressedBlockState_t*)malloc(sizeof(ZSTD_compressedBlockState_t));
if (!bs) return ERROR(memory_allocation);
U32* wksp = (U32*)malloc(HUF_WORKSPACE_SIZE);
if (!wksp) return ERROR(memory_allocation);
short* offcodeNCount = (short*)malloc((MaxOff+1)*sizeof(short));
if (!bs || !wksp || !offcodeNCount) {
return ERROR(memory_allocation);
}
if (!offcodeNCount) return ERROR(memory_allocation);
ZSTD_reset_compressedBlockState(bs);
headerSize = ZSTD_loadCEntropy(bs, wksp, offcodeNCount, &offcodeMaxValue, dictBuffer, dictSize);
free(bs);
free(wksp);
free(offcodeNCount);