Crash after changing canvas size fields by click

[M-miamoto]

When changing a document's canvas size, Inkscape 0.44 +dev nightly (25 Oct)
crashes after a width value is entered and, without hitting enter, the
height field is clicked upon.

[Bryce Harrington (bryce)]

Originator: NO

Could a second person verify this occurs on Windows? I cannot reproduce
the issue on Linux.

[Johan Engelen (johanengelen)]

Originator: NO

Cannot reproduce on WinXP, Inkscape 0.45+devel (01-01-2007).
(I assumed changing the document's canvas is done in the "Document
Properties" dialog ( -> Page -> Format -> Custom size))

Could you please give the exact steps to reproduce the crash (maybe
provide an SVG too)?

[gustav_b (gustav-b)]

Originator: NO

File Added: inkscape-effects_with_flowcharts.svgz

[gustav_b (gustav-b)]

Originator: NO

File Added: 1624076-warnings+bt

[gustav_b (gustav-b)]

Originator: NO

I can reproduce this /sometimes/ using svn head (on linux with gtk 2.10.6
/ gtkmm 2.12.2).

I've managed to trigger it in some cases using the following steps:
1. Start Inkscape and open the attached
inkscape-effects_with_flowcharts.svgz
2. Ctrl+shift+d for document properties
3. Change the document width field from 1500 to 1400
4. Click the height field
...sometimes I just get some warnings, and sometimes it also crashes with
the attached backtrace.

(I occasionally manage to crash it by repeting step 3 and 4 with new width
values)

Could this be caused by a problem with our custom signal_value_changed for
the Scalar widget and unfortunate timing with the default signal for
focus-out on the Gtk::Spinbutton? A timing problem would explain the
randomness of this bug...

[M-miamoto (m-miamoto)]

Originator: YES

Yes gustav_b, those are the exact steps i have followed to trigger the
crash (besides dimensions). The crash occurs every time for me on WinXP.
And good point about the custom signal_value_changed.

johanengelen: 0.45+devel (1-1-07)? Where is that available? The bug may
have been inadvertently fixed if you can't reproduce the crash in WinXP.

[Molumen (molumen)]

Originator: NO

Cannot reproduce in 0.45devel build 04 jan 2006 on WIN XP SP2.

[Bryce Harrington (bryce)]

Originator: NO

Thanks gustav_b! Since this bug was able to be reproduced on Linux, I'm
removing the Win32-specific categorization. Since it appears to afflict
multiple platforms, this makes it more important to get fixed, too.

[gustav_b (gustav-b)]

Originator: NO

Could this be caused by the GTK bug mentioned in
https://sourceforge.net/tracker/?func=detail&atid=604306&aid=1580903&group_id=93438
?
(The GTK bug in question is
http://bugzilla.gnome.org/show_bug.cgi?id=374378). Looking at the warnings
they both fail on the same assertion.

I don't have time to build cvs head GTK on my system right now, so if
anyone using a GTK build no older than 2006-12-30 could try to reproduce
this using the steps in my last comment it would be of much help.

[Johan Engelen (johanengelen)]

Originator: NO

m_miamoto: bleeding edge versions of inkscape can be found at
http://inkscape.modevia.com/

[Buliabyak-users (buliabyak-users)]

Originator: NO

The " assertion failed: GTK_WIDGET_HAS_FOCUS" crash was fixed in gtk
2.10.7 and later, as explained in rel notes:

http://wiki.inkscape.org/wiki/index.php/ReleaseNotes045#Spinbuttons_may_crash_if_you_have_GTK.2B_older_than_2.10.7

Actually they didn't really fix it - they just removed the assert. The
warning is still fired. The deeper reason is gtk's unability to cope with
interruptible display which may call main loop iterations within a
value-changed callback.

But anyway, it does not crash so i'm closing this.