Metadatacopystruct _SEGMENT_HEAP_EXTRA { unsigned short AllocationTag;/* 0x0 2 */ unsigned char InterceptorIndex : 4;/* 0x2:0 1 */ unsigned char UserFlags : 4;/* 0x2:4 1 */ unsigned char ExtraSizeInUnits;/* 0x3 1 */ void* Settable;/* 0x4 4 */};