diff options
| author | aliguori <aliguori@c046a42c-6fe2-441c-8c8c-71466251a162> | 2008-12-04 22:36:38 +0000 |
|---|---|---|
| committer | aliguori <aliguori@c046a42c-6fe2-441c-8c8c-71466251a162> | 2008-12-04 22:36:38 +0000 |
| commit | b2b183c2700d40210df51ff3ec9a2568ce9f5a43 (patch) | |
| tree | 8435d2a51180a3800ad42ac130ceb1b947b2623a /qemu-tech.texi | |
| parent | 4dc822d726376fd4369089f04eb8605d2f94b74f (diff) | |
do boundary check based on absolute value (Glauber Costa)
For backward operations, dstpitch and srcpitch can
be negative. This leads BLTUNSAFE macro into an
overflow, and as a result, it avoids performing
operations that are perfectly valid.
The visible effect that led to that patch was the gnome-panel
bar in Fedora10. Before this patch, you could see garbage
clobbering a big portion of the bar.
After this patch, this garbage is gone.
Signed-off-by: Glauber Costa <glommer@redhat.com>
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5880 c046a42c-6fe2-441c-8c8c-71466251a162
Diffstat (limited to 'qemu-tech.texi')
0 files changed, 0 insertions, 0 deletions