Make Size Returned from HeapSize Always Match The Requested Size

[Alexandre Julliard]

Robert Shearman <rob at codeweavers.com> writes:

> --- dlls/ntdll/heap.c	25 Jun 2005 18:00:57 -0000	1.41
> +++ dlls/ntdll/heap.c	8 Jul 2005 16:22:47 -0000
> @@ -52,6 +52,9 @@ typedef struct tagARENA_INUSE
>  {
>      DWORD  size;                    /* Block size; must be the first field */
>      DWORD  magic;                   /* Magic number */
> +    BYTE   unused_bytes;            /* Number of bytes in the block not used by user data */
> +    BYTE   reserved0[3];            /* Not used. Set to 0 */
> +    DWORD  reserved1;               /* Not used. Set to 0 */
>  } ARENA_INUSE;

I don't think we want to double the arena size for that. You can just
steal a few bits from the magic number.

-- 
Alexandre Julliard
julliard at winehq.org