if ((U32)dictSize > 64 KB) { dictSize = 64 KB; } /* useless to define a dictionary > 64 KB */
if ((U32)dictSize > dict->dictSize) { dictSize = (int)dict->dictSize; }
- memmove(safeBuffer, previousDictEnd - dictSize, dictSize);
+ if (safeBuffer == NULL) assert(dictSize == 0);
+ if (safeBuffer != NULL)
+ memmove(safeBuffer, previousDictEnd - dictSize, dictSize);
dict->dictionary = (const BYTE*)safeBuffer;
dict->dictSize = (U32)dictSize;
LZ4_streamHC_t* LZ4_initStreamHC (void* buffer, size_t size)
{
LZ4_streamHC_t* const LZ4_streamHCPtr = (LZ4_streamHC_t*)buffer;
- LZ4HC_CCtx_internal* const hcstate = &(LZ4_streamHCPtr->internal_donotuse);
/* if compilation fails here, LZ4_STREAMHCSIZE must be increased */
LZ4_STATIC_ASSERT(sizeof(LZ4HC_CCtx_internal) <= LZ4_STREAMHCSIZE);
DEBUGLOG(4, "LZ4_initStreamHC(%p, %u)", buffer, (unsigned)size);
if (size < sizeof(LZ4_streamHC_t)) return NULL;
if (!LZ4_isAligned(buffer, LZ4_streamHC_t_alignment())) return NULL;
/* init */
- MEM_INIT(hcstate, 0, sizeof(*hcstate));
+ { LZ4HC_CCtx_internal* const hcstate = &(LZ4_streamHCPtr->internal_donotuse);
+ MEM_INIT(hcstate, 0, sizeof(*hcstate)); }
LZ4_setCompressionLevel(LZ4_streamHCPtr, LZ4HC_CLEVEL_DEFAULT);
return LZ4_streamHCPtr;
}