gnome-terminal crashes when copying large amounts of text to xsel

[Marius Gedminas]

To reproduce:
0. Install xsel
1. Open gnome-terminal
2. Run 'seq 150000 | fmt' to produce a lot of scrollback
3. Tripple-click on the last line of output
4. press Shift-Home to scroll to top
5. Shift-click on the first line of output
6. Run 'xsel > /tmp/PLEASEDONTCRASH'

Expected result: no crash

Actual result: all gnome-terminal windows disappear, and this appears in ~/.xsession-errors:

(gnome-terminal:29462): Gdk-WARNING **: The program 'gnome-terminal' received an X Window System error.
This probably reflects a bug in the program.
The error was 'BadWindow (invalid Window parameter)'.
  (Details: serial 17484 error_code 3 request_code 18 minor_code 0)
  (Note to programmers: normally, X errors are reported asynchronously;
   that is, you will receive the error a while after causing it.
   To debug your program, run it with the --sync command line
   option to change this behavior. You can then get a meaningful
   backtrace from your debugger if you break on the gdk_x_error() function.)

ProblemType: Bug
DistroRelease: Ubuntu 11.10
Package: gnome-terminal 3.0.1-0ubuntu3
ProcVersionSignature: Ubuntu 3.0.0-16.28-generic 3.0.17
Uname: Linux 3.0.0-16-generic i686
ApportVersion: 1.23-0ubuntu4
Architecture: i386
Date: Wed Feb 29 16:57:27 2012
EcryptfsInUse: Yes
InstallationMedia: Ubuntu 9.10 "Karmic Koala" - Release i386 (20091028.5)
ProcEnviron:
 LANGUAGE=lt_LT:lt:en_GB:en
 LC_CTYPE=lt_LT.UTF-8
 PATH=(custom, user)
 LANG=lt_LT.UTF-8
 SHELL=/bin/bash
SourcePackage: gnome-terminal
UpgradeStatus: Upgraded to oneiric on 2011-10-13 (138 days ago)

[Marius Gedminas (mgedmin)]

Sometimes it doesn't crash at once and I have to repeat steps 3 through 6 a few times.

[Marius Gedminas (mgedmin)]

Forwarded upstream: https://bugzilla.gnome.org/show_bug.cgi?id=671066

[Marius Gedminas (mgedmin)]

This appears to be a bug in xsel (with a fix pending at https://github.com/kfish/xsel/pull/1), _and_ a bug in Gtk+ ("Should GTK+ protect itself against selection windows disappearing? Most likely, yes.").