dix: copy event in TouchConvertToPointerEvent correctly

[Peter Hutterer]

On Mon, Apr 15, 2013 at 04:53:48PM +0200, Maarten Lankhorst wrote:
> Fixes reading random memory read beyond the end of original event.
> 
> sizeof device_event: 424
> sizeof internal_event: 2800
> 
> Signed-off-by: Maarten Lankhorst <maarten.lankhorst at canonical.com>
> ---

applied, thanks

Cheers,
   Peter



> diff --git a/dix/touch.c b/dix/touch.c
> index a191f14..1f7247b 100644
> --- a/dix/touch.c
> +++ b/dix/touch.c
> @@ -634,14 +634,14 @@ TouchConvertToPointerEvent(const InternalEvent *event,
>      BUG_WARN_MSG(!(event->device_event.flags & TOUCH_POINTER_EMULATED),
>                   "Non-emulating touch event\n");
>  
> -    *motion_event = *event;
> +    motion_event->device_event = event->device_event;
>      motion_event->any.type = ET_Motion;
>      motion_event->device_event.detail.button = 0;
>      motion_event->device_event.flags = XIPointerEmulated;
>  
>      if (nevents > 1) {
>          BUG_RETURN_VAL(!button_event, 0);
> -        *button_event = *event;
> +        button_event->device_event = event->device_event;
>          button_event->any.type = ptrtype;
>          button_event->device_event.flags = XIPointerEmulated;
>          /* detail is already correct */
>