[PATCH 5/5] ntdll: Implement RtlSetUserValueHeap.
Zebediah Figura
zfigura at codeweavers.com
Tue Jun 7 14:33:15 CDT 2022
On 6/7/22 13:33, Rémi Bernon wrote:
> typedef struct
> {
> + SIZE_T __pad[sizeof(SIZE_T) / sizeof(DWORD)];
> struct list entry; /* entry in heap large blocks list */
> SIZE_T data_size; /* size of user data */
> SIZE_T block_size; /* total size of virtual memory block */
> - DWORD pad[2]; /* padding to ensure 16-byte alignment of data */
> + void *user_value;
> DWORD size; /* fields for compatibility with normal arenas */
> DWORD magic; /* these must remain at the end of the structure */
> } ARENA_LARGE;
Doesn't this end up wasting space on 64 bits? I.e. the structure is
already aligned to a multiple of 16 bytes without any padding.
(Also, somewhat out of curiosity, why move the member?)
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