Is shadowfb broken in X.Org 7.2RC2?

[Matthieu Herrb]

Hi,

while working on getting X.Org 7.2 working on OpenBSD, I get segfaults
with the stack completely smashed when I use the wsfb driver which
enable shadowfb by default. When disabling shadowfb, the rest works fine.

Looking at the bugzilla database, bugs #6048 and #9106 suggest that
shadowfb is broken in other configurations too.

Can someone check this with vesafb or other drivers that support
shadowfb on other systems?

Thanks in advance.
-- 
Matthieu Herrb