libXrender: Changes to 'master'

[GitLab Mirror]

 src/Xrender.c |   31 +++++++++++++++++++------------
 1 file changed, 19 insertions(+), 12 deletions(-)

New commits:
commit 01e754610df2195536c5b31c1e8df756480599d1
Author: Alex Richardson <arichardson at FreeBSD.org>
Date:   Tue Sep 12 22:55:37 2023 -0700

    Ensure XRenderInfo pointers are appropriately aligned
    
    While runnig some X11 applications on an Arm Morello platform I noticed
    bus errors inside xrender. XRenderInfo uses a single malloc call to
    allocate multiple objects in one single allocation and places those objects
    directly after the XRenderInfo object. However, these calculations do not
    ensure that this objects are sufficiently aligned. I noticed this because
    on Morello (and other CHERI-enabled architectures) pointers need to be
    strongly aligned. Instead of allocating a single block with potentially
    misaligned subsequent objects, this change uses seprate allocations for
    the four arrays.
    
    This is an alternative to https://gitlab.freedesktop.org/xorg/lib/libxrender/-/merge_requests/12
    
    Signed-off-by: Alex Richardson <arichardson at FreeBSD.org>