Re: [PATCH v7 0/5] MR8703: combase: Implement HSTRING marshaling functions.

[Nikolay Sivov (＠nsivov)]

Nikolay Sivov (@nsivov) commented about dlls/combase/usrmarshal.c:
> -
>        WCHAR data[];
> -
>    } buf;
> -
>    struct {
>
> +#ifdef _WIN64
> -
>        ULONG pad;
>
> +#endif
> -
>        HSTRING str;
> -
>    };
> - };
>
> +};
> +#pragma pack(pop)
> -
>
> +/******************************************************************************
> -
> -
>       HSTRING_UserSize (combase.@)
> - */
>
> +ULONG __RPC_USER HSTRING_UserSize(ULONG *flags, ULONG start, HSTRING *str)

It's not a 'start', it's current buffer 'size', where you're appending HSTRING argument.