| Min version | Vista | Vista SP1 | |
|---|---|---|---|
| Max version | 10 TH2 | ||
| Architecture | x86 | x64 | |
| x86 offset offset:bitpos | Field Name | x64 offset offset:bitpos | |
| 0x0000 | struct _HEAP_LIST_LOOKUP * ExtendedLookup | 0x0000 | |
| 0x0004 | unsigned long ArraySize | 0x0008 | |
| 0x0008 | unsigned long ExtraItem | 0x000C | |
| 0x000C | unsigned long ItemCount | 0x0010 | |
| 0x0010 | unsigned long OutOfRangeItems | 0x0014 | |
| 0x0014 | unsigned long BaseIndex | 0x0018 | |
| 0x0018 | struct _LIST_ENTRY * ListHead | 0x0020 | |
| 0x001C | unsigned long * ListsInUseUlong | 0x0028 | |
| 0x0020 | struct _LIST_ENTRY * * ListHints | 0x0030 | |