Where to free screen pixmap driver private?

[fancy fang]

Dear all,
           If I use driver pixmap, the screen pixmap also has an allocated
driver private. However, when xorg terminates, the driver DestroyPixmap can
not be executed. So, the screen pixmap driver private can not be freed. Is
this a bug? Can anyone explain it?  Thanks a lot!

Best wishes,
Fancy Fang
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.x.org/archives/xorg-devel/attachments/20101122/756faffe/attachment.htm>