Comment 0 for bug 1616651

This happened while installing Xfce with Synaptic.

chris@localhost:~$ lsb_release -rd
Description: Ubuntu 16.04.1 LTS
Release: 16.04

chris@localhost:~$ apt-cache policy gnome-shell
gnome-shell:
  Installed: 3.18.5-0ubuntu0.1
  Candidate: 3.18.5-0ubuntu0.1
  Version table:
 *** 3.18.5-0ubuntu0.1 500
        500 http://us.archive.ubuntu.com/ubuntu xenial-updates/universe amd64 Packages
        100 /var/lib/dpkg/status
     3.18.4-0ubuntu3 500
        500 http://us.archive.ubuntu.com/ubuntu xenial/universe amd64 Packages

ProblemType: Crash
DistroRelease: Ubuntu 16.04
Package: gnome-shell 3.18.5-0ubuntu0.1
ProcVersionSignature: Ubuntu 4.4.0-34.53-generic 4.4.15
Uname: Linux 4.4.0-34-generic x86_64
ApportVersion: 2.20.1-0ubuntu2.1
Architecture: amd64
AssertionMessage: *** Error in `/usr/bin/gnome-shell': free(): invalid pointer: 0x00000000082dcf30 ***
CrashCounter: 1
CurrentDesktop: GNOME
Date: Wed Aug 24 16:21:37 2016
DisplayManager: gdm3
ExecutablePath: /usr/bin/gnome-shell
InstallationDate: Installed on 2014-10-24 (670 days ago)
InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Release amd64 (20140417)
ProcCmdline: /usr/bin/gnome-shell
ProcEnviron:
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=en_US.UTF-8
 SHELL=/bin/bash
Signal: 6
SourcePackage: gnome-shell
StacktraceTop:
 __libc_message (do_abort=do_abort@entry=2, fmt=fmt@entry=0x7fabad1e06b0 "*** Error in `%s': %s: 0x%s ***\n") at ../sysdeps/posix/libc_fatal.c:175
 malloc_printerr (ar_ptr=<optimized out>, ptr=<optimized out>, str=0x7fabad1dd48f "free(): invalid pointer", action=3) at malloc.c:5007
 _int_free (av=<optimized out>, p=<optimized out>, have_lock=0) at malloc.c:3868
 __GI___libc_free (mem=<optimized out>) at malloc.c:2969
 g_strfreev () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
Title: gnome-shell assert failure: *** Error in `/usr/bin/gnome-shell': free(): invalid pointer: 0x00000000082dcf30 ***
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo
XsessionErrors:
 x-session-manager[7610]: CRITICAL: We failed, but the fail whale is dead. Sorry....
 x-session-manager[14832]: CRITICAL: We failed, but the fail whale is dead. Sorry....
 x-session-manager[5188]: CRITICAL: We failed, but the fail whale is dead. Sorry....