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7e8f100121
In case you want to copy a region with source = dest, you have the same pixmap
as source and dest.
At the end of exaPixmapIsOffscreen_classic() the devPrivate.ptr is reset to
NULL (look at the sources).
Now this is what happens in ExaCheckCopyNtoN:
exaPrepareAccess( pDst );
Calls IsOffscreen()
sets devPrivate.ptr to NULL
sets up devPrivate.ptr to real pointer
Everything OK
exaPrepareAccess( pSrc );
Calls IsOffscreen()
sets devPrivate.ptr to NULL
BAILS OUT CAUSE OF NESTED OPERATION SINCE DST EQUALS SRC
We end up with devPrivate.ptr as NULL, and that is clearly wrong.
In particular this fixes a segfault when using the psb driver (bug 28077)
Signed-off-by: Éric Piel <eric.piel@tremplin-utc.net>
Reviewed-by: Michel Dänzer <michel@daenzer.net>
Signed-off-by: Keith Packard <keithp@keithp.com>
X Server
The X server accepts requests from client applications to create windows,
which are (normally rectangular) "virtual screens" that the client program
can draw into.
Windows are then composed on the actual screen by the X server
(or by a separate composite manager) as directed by the window manager,
which usually communicates with the user via graphical controls such as buttons
and draggable titlebars and borders.
For a comprehensive overview of X Server and X Window System, consult the
following article:
http://en.wikipedia.org/wiki/X_server
All questions regarding this software should be directed at the
Xorg mailing list:
http://lists.freedesktop.org/mailman/listinfo/xorg
Please submit bug reports to the Xorg bugzilla:
https://bugs.freedesktop.org/enter_bug.cgi?product=xorg
The master development code repository can be found at:
git://anongit.freedesktop.org/git/xorg/xserver
http://cgit.freedesktop.org/xorg/xserver
For patch submission instructions, see:
http://www.x.org/wiki/Development/Documentation/SubmittingPatches
For more information on the git code manager, see:
http://wiki.x.org/wiki/GitPage