Min version	Vista	Vista SP1	8 Pre RTM		8 Pre RTM	8
Max version	7 SP1				10 TH2
Architecture	x86	x64	x86	x64	x86	x64
x86 offset offset:bitpos	Field Name						x64 offset offset:bitpos
0x0000	struct _HEAP_SUBSEGMENT * Hint		struct _HEAP_LOCAL_DATA * volatile LocalData		struct _HEAP_LOCAL_DATA * LocalData		0x0000
0x0004	struct _HEAP_SUBSEGMENT * ActiveSubsegment		struct _HEAP_SUBSEGMENT * volatile ActiveSubsegment				0x0008
0x0008	struct _HEAP_SUBSEGMENT * volatile[16] CachedItems						0x0010
0x0048	union _SLIST_HEADER SListHeader						0x0090
0x0050	union _HEAP_BUCKET_COUNTERS Counters				volatile union _HEAP_BUCKET_COUNTERS Counters		0x00A0
0x0058	volatile struct _HEAP_LOCAL_DATA * LocalData	volatile struct _HEAP_LOCAL_DATA * LocalData	unsigned long LastOpSequence				0x00A8
0x005C			uint16_t BucketIndex	uint16_t BucketIndex	uint16_t BucketIndex	uint16_t BucketIndex	0x00AC
0x005C	unsigned long LastOpSequence	unsigned long LastOpSequence					0x00B0
0x005E			uint16_t LastUsed				0x00AE
0x0060			uint16_t NoThrashCount	uint16_t NoThrashCount	uint16_t NoThrashCount	uint16_t NoThrashCount	0x00B0
0x0060	volatile uint16_t BucketIndex						0x00B4
0x0062	uint16_t LastUsed						0x00B6