xchat-gnome crashed with SIGFPE in gtk_xtext_check_ent_visibility()

StacktraceTop:
 gtk_xtext_check_ent_visibility (xtext=xtext@entry=0x202f560, find_ent=0x0, add=add@entry=1) at xtext.c:3365
 gtk_xtext_check_marker_visibility (xtext=0x202f560) at xtext.c:3382
 conversation_panel_check_marker_visibility (panel=<optimized out>) at conversation-panel.c:1185
 on_main_window_focus_in (widget=widget@entry=0x20044b0, event=<optimized out>, data=data@entry=0x0) at main-window.c:780
 _gtk_marshal_BOOLEAN__BOXED (closure=0x2cf94c0, return_value=0x7ffe38cfaa90, n_param_values=<optimized out>, param_values=0x7ffe38cfaaf0, invocation_hint=<optimized out>, marshal_data=<optimized out>) at /build/gtk+3.0-lfM3Xq/gtk+3.0-3.16.6/./gtk/gtkmarshalers.c:85

Randomly crash at startup with that same backtrace since Ubuntu 15.10. The problem is the xtext widget is not yet realized so xtext->fontsize is 0 and a div-by-0 happens.

I didn't understand why the xtext widget is not yet realized when its parent GtkWindow is already realized and gets the focus-in event. Also, why did it ever worked before?

In any case, attached patch works perfectly for me.

The attachment "xchat-crash.patch" seems to be a patch. If it isn't, please remove the "patch" flag from the attachment, remove the "patch" tag, and if you are a member of the ~ubuntu-reviewers, unsubscribe the team.

[This is an automated message performed by a Launchpad user owned by ~brian-murray, for any issues please contact him.]

Thanks Xavier, I uploaded to 15.10 and xenial. Would be nice if you could forward the patch upstream in case somebody is picking the project up/wants to review it

This bug was fixed in the package xchat-gnome - 1:0.30.0~git20141005.816798-0ubuntu8

---------------
xchat-gnome (1:0.30.0~git20141005.816798-0ubuntu8) xenial; urgency=medium

  * debian/patches/xtext_widget_segfault.patch:
    - don't try to get value from a widget not realized yet, fixes a
      segfault on start, thanks Xavier Claessens (lp: #1495828)

 -- Sebastien Bacher <email address hidden> Tue, 08 Mar 2016 16:08:19 +0100

Hello Daniel, or anyone else affected,

Accepted xchat-gnome into wily-proposed. The package will build now and be available at https://launchpad.net/ubuntu/+source/xchat-gnome/1:0.30.0~git20141005.816798-0ubuntu6.1 in a few hours, and then in the -proposed repository.

Please help us by testing this new package. See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how to enable and use -proposed. Your feedback will aid us getting this update out to other Ubuntu users.

If this package fixes the bug for you, please add a comment to this bug, mentioning the version of the package you tested, and change the tag from verification-needed to verification-done. If it does not fix the bug for you, please add a comment stating that, and change the tag to verification-failed. In either case, details of your testing will help us make a better decision.

Further information regarding the verification process can be found at https://wiki.ubuntu.com/QATeam/PerformingSRUVerification . Thank you in advance!

Package in wily-proposed works great for me.

I released this as part of today's security update. Marking as fix released.