_HEAP_USERDATA_HEADER

Metadatacopy
struct _HEAP_USERDATA_HEADER {
    union {
        struct _SINGLE_LIST_ENTRY SFreeListEntry;/* 0x0  4 */
        struct _HEAP_SUBSEGMENT* SubSegment;/* 0x0  4 */
    };/* 0x0  4 */
    void* Reserved;/* 0x4  4 */
    unsigned long SizeIndex;/* 0x8  4 */
    unsigned long Signature;/* 0xc  4 */
};