The patches sound great, please send them on. I may not have time to merge them myself but I can at least get them into gitlab with some commentary for the next adventurous soul.
- ajax On Wed, Dec 20, 2023 at 3:27 AM <mo...@mojatatu.com> wrote: > I tried to send a HELP request to xorg-request but it disappeared > without any trace as far as I can tell, so I'm not sure whether I can > subscribe. If anyone sees this, _something_ got through, though. > > There's a bug I've seen in various X servers. I *think* they're all > derived from X.org code, and I suspect this is moderately widespread; > I've seen it on recent Ubuntu, recent RaspOS, and old NetBSD. I wrote > a tiny test (ftp.rodents-montreal.org:/mouse/misc/cursor-bug.c - also > available over HTTP as well, though I'm not sure what Content-Type: > it'll be served as) and people on NetBSD's tech-x11 report it on recent > NetBSD as well, on some, but only some, hardware. > > The bug is that creating a pixmap cursor (a CreateCursor request) with > a mask of None typically extends the source pixmap to the right with > server-dependent data (typically background pixels) to a width such as > 16 or 32 pixels. See the comment header on the test program for more. > > I wrote patches to fix this for two server versions (the ones that > shipped with NetBSD 4.0.1/i386 and 5.2/amd64). I can certainly send > those patches if anyone wants them; they are old, but if that part of > ProcCreateCursor is unchanged since then they might be a useful > starting point (though I do have low-to-negative confidence I got the > code right for other architectures). > > /~\ The ASCII Mouse > \ / Ribbon Campaign > X Against HTML > / \ Email! mo...@mojatatu.com > >
