[cairo] Crash of Racket on OpenBSD with Cairo 1.12.8

[Chris Wilson]

On Thu, 10 Jan 2013 02:02:36 +0100, Juan Francisco Cantero Hurtado <iam at juanfra.info> wrote:
> I've problems compiling the gui-debugger of Racket on OpenBSD. I've been 
> trying different things the last month and the culprit is the update of 
> the OpenBSD port from 1.12.2 to 1.12.8. If I downgrade Cairo to the old 
> version, Racket compiles without problems. The crash only occurs on 
> i386, I can compile Racket on amd64. The funny thing is I doesn't have 
> this error on NetBSD with the same versions of Racket and Cairo.
> 
> I only want you confirms me if the bug is in Cairo or in Racket. Here 
> two backtraces of the crash but let me know if you need more info. Thanks!.
> 
> https://github.com/jasperla/openbsd-wip/blob/a1b5b22de241331e270700bad905376f52f04aef/lang/racket/backtrace-cairo_pango-i386.log
> 
> https://github.com/jasperla/openbsd-wip/blob/d022d83bc45e9a4dce20b7effe6defcfd80e2d4c/lang/racket/backtrace2-cairo_pango-i386.log

It's the use of pixman-glyphs that was introduced in the update. Can you
grab the debug symbols for pixman and a new backtrace?

Could be misdetection of features, or miscompilation, or just a plain
old bug. At any rate it is cairo/pixman bug.
-Chris

-- 
Chris Wilson, Intel Open Source Technology Centre