[PATCH] user32: Avoid pointer truncation in free_user_handle.

Jacek Caban jacek at codeweavers.com
Fri Mar 25 06:22:01 CDT 2022


Hi Rémi,

On 3/25/22 09:53, Rémi Bernon wrote:
> Signed-off-by: Rémi Bernon <rbernon at codeweavers.com>
> ---
>   dlls/user32/win.c | 2 +-
>   1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/dlls/user32/win.c b/dlls/user32/win.c
> index 77dfc131928..fac534a7c87 100644
> --- a/dlls/user32/win.c
> +++ b/dlls/user32/win.c
> @@ -72,7 +72,7 @@ void release_user_handle_ptr( void *ptr )
>    */
>   void *free_user_handle( HANDLE handle, unsigned int type )
>   {
> -    return UlongToHandle( NtUserCallTwoParam( HandleToUlong(handle), type, NtUserFreeHandle ));
> +    return (void *)NtUserCallTwoParam( HandleToUlong(handle), type, NtUserFreeHandle );
>   }


The patch itself looks good, but I think it would be more interesting to 
just get rid of free_user_handle from user32. At this point, the only 
remaining object managed by user32 is menu. I sent a patch moving it to 
win32u.


Thanks,

Jacek




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