Bug 10921

Summary:	A problem in _cairo_xlib_screen_get_gc() when opening a new child window
Product:	cairo	Reporter:	Daichi Kawahata <daichi.k>
Component:	xlib backend	Assignee:	Carl Worth <cworth>
Status:	RESOLVED FIXED	QA Contact:	cairo-bugs mailing list <cairo-bugs>
Severity:	normal
Priority:	medium	CC:	chris
Version:	1.4.7
Hardware:	SGI
OS:	IRIX
Whiteboard:
i915 platform:		i915 features:
Attachments:	Runtime stack trace log from Sylpheed Runtime stack trace log from Terminal Display information GL/GLX information Xservers file

Description Daichi Kawahata 2007-05-11 23:31:09 UTC

Hi,

My previous problem (#7294) has gone, but an another recently.
Searching similar reports in this section doesn't show the
right place to report, thus I created a new account.

When I try to open a new child window (like settings window)
from a main window already opened in a certain applications
(in this case Sylpheed, Terminal), Cairo causes a segfault
against them.

It's the latest version 1.4.7 from the git repository with;

IRIX64 6.5.30m
GCC    3.4.6 (-O2 -g -W -Wall -Wformat=2 -mips4)
GTK+   2.11.0
GLib   2.13.2
Pango  1.16.4

I'll submit the logs later.

Thanks,

Comment 1 Daichi Kawahata 2007-05-11 23:32:35 UTC

Created attachment 9936 [details]
Runtime stack trace log from Sylpheed

Comment 2 Daichi Kawahata 2007-05-11 23:33:47 UTC

Created attachment 9937 [details]
Runtime stack trace log from Terminal

Comment 3 Daichi Kawahata 2007-05-11 23:34:51 UTC

Created attachment 9938 [details]
Display information

Comment 4 Daichi Kawahata 2007-05-11 23:36:16 UTC

Created attachment 9939 [details]
GL/GLX information

Comment 5 Daichi Kawahata 2007-05-11 23:37:08 UTC

Created attachment 9940 [details]
Xservers file

Comment 6 Chris Wilson 2007-05-12 02:14:28 UTC

Thanks for the report, a clumsy mistake on my part.

commit 7802de6d5edaf998c98b141870dc2c6b4c0f3e91
Author: Chris Wilson <chris@chris-wilson.co.uk>
Date:   Sat May 12 10:10:49 2007 +0100

    [cairo-xlib-screen] Clear the gc_needs_clip_reset after use.
    
    After consuming the GC we need to unset the clip reset flag, so that
    if we try and get a new GC without first putting a fresh one we do not
    try to call XSetClipMask on a NULL GC.
    
    (Fixes http://bugs.freedesktop.org/show_bug.cgi?id=10921)

Comment 7 Daichi Kawahata 2007-05-12 03:02:29 UTC

Confirmed that the problem has gone.

Thanks,

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