[Bug 1756801] Re: mate-tweak crashed with SIGSEGV in g_type_check_instance_is_fundamentally_a()

[Norbert]

** Also affects: glib2.0 (Ubuntu)
   Importance: Undecided
       Status: New

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Title:
  mate-tweak crashed with SIGSEGV in
  g_type_check_instance_is_fundamentally_a()

Status in glib2.0 package in Ubuntu:
  New
Status in mate-tweak package in Ubuntu:
  Confirmed

Bug description:
  Changing layouts between Pantheon and Traditional, mate-tweak closed
  itself.

  ProblemType: Crash
  DistroRelease: Ubuntu 18.04
  Package: mate-tweak 18.04.14-0ubuntu1
  ProcVersionSignature: Ubuntu 4.15.0-12.13-generic 4.15.7
  Uname: Linux 4.15.0-12-generic x86_64
  ApportVersion: 2.20.8-0ubuntu10
  Architecture: amd64
  Date: Sun Mar 18 22:56:45 2018
  ExecutablePath: /usr/bin/mate-tweak
  InterpreterPath: /usr/bin/python3.6
  PackageArchitecture: all
  ProcCmdline: mate-tweak
  ProcEnviron:
   
  Python3Details: /usr/bin/python3.6, Python 3.6.5rc1, python3-minimal, 3.6.4-1
  PythonDetails: /usr/bin/python2.7, Python 2.7.14+, python-minimal, 2.7.14-4
  SegvAnalysis:
   Segfault happened at: 0x7fe750c20c31 <g_type_check_instance_is_fundamentally_a+49>:	movzbl 0x14(%rdx),%eax
   PC (0x7fe750c20c31) ok
   source "0x14(%rdx)" (0x100000014) not located in a known VMA region (needed readable region)!
   destination "%eax" ok
  SegvReason: reading unknown VMA
  Signal: 11
  SourcePackage: mate-tweak
  StacktraceTop:
   g_type_check_instance_is_fundamentally_a () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
   g_object_ref () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
   g_weak_ref_get () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
   ?? () from /usr/lib/x86_64-linux-gnu/libgio-2.0.so.0
   g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
  Title: mate-tweak crashed with SIGSEGV in g_type_check_instance_is_fundamentally_a()
  UpgradeStatus: No upgrade log present (probably fresh install)
  UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo

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