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b9f48d60bc
ActivateDevice was ignoring errors from DeviceCursorInitialize, so cursor-related calls failed later. Jeremy Huddleston saw that crash in miPointerConstrainCursor, while with Xvfb I saw it in miSpriteRealizeCursor. miDCDeviceCleanup frees any non-NULL GCs. miDCDeviceInitialize calls Cleanup on any failure, but if it failed early then some of the pointers in the miDCBufferPtr were garbage. Switch from malloc to calloc to ensure everything's initialized safely first. With these two fixes, if CreateGC fails then the server gracefully fails in FatalError instead of segfaulting. Signed-off-by: Jamey Sharp <jamey@minilop.net> Cc: Peter Hutterer <peter.hutterer@who-t.net> Reviewed-by: Peter Hutterer <peter.hutterer@who-t.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