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[Peter Wu <lekensteyn@xxxxxxxxx>]

Can reproduce the crash with a fully up-to-date Ubuntu 16.04.

libqt5gui5:amd64 5.5.1+dfsg-16ubuntu7.6
wireshark-qt 2.6.8-1~ubuntu16.04.0

(gdb) bt
#0  QIconPrivate::~QIconPrivate (this=0x5555580aaf60, __in_chrg=<optimized out>) at image/qicon_p.h:64
#1  QIcon::~QIcon (this=<optimized out>, __in_chrg=<optimized out>) at image/qicon.cpp:681
#2  0x00007ffff0ea4c88 in ScalableEntry::~ScalableEntry (this=0x55555641d500, __in_chrg=<optimized out>)
    at ../../include/QtGui/5.5.1/QtGui/private/../../../../../src/gui/image/qiconloader_p.h:95
#3  ScalableEntry::~ScalableEntry (this=0x55555641d500, __in_chrg=<optimized out>) at ../../include/QtGui/5.5.1/QtGui/private/../../../../../src/gui/image/qiconloader_p.h:95
#4  0x00007ffff0e9f07e in qDeleteAll<QList<QIconLoaderEngineEntry*>::const_iterator> (end=..., begin=...) at ../../include/QtCore/../../src/corelib/tools/qalgorithms.h:317
#5  qDeleteAll<QList<QIconLoaderEngineEntry*> > (c=...) at ../../include/QtCore/../../src/corelib/tools/qalgorithms.h:325
#6  QIconLoaderEngine::~QIconLoaderEngine (this=0x5555563a82c0, __in_chrg=<optimized out>) at image/qiconloader.cpp:352
#7  QIconLoaderEngine::~QIconLoaderEngine (this=0x5555563a82c0, __in_chrg=<optimized out>) at image/qiconloader.cpp:353
#8  0x00007ffff0e9b0da in QIconPrivate::~QIconPrivate (this=0x5555564193a0, __in_chrg=<optimized out>) at image/qicon_p.h:64
#9  QIcon::~QIcon (this=<optimized out>, __in_chrg=<optimized out>) at image/qicon.cpp:681
#10 0x00007ffff0e9b109 in QCache<QString, QIcon>::clear (this=0x7ffff126a3a0 <(anonymous namespace)::Q_QGS_qtIconCache::innerFunction()::holder>)
    at ../../include/QtCore/../../src/corelib/tools/qcache.h:118
#11 QCache<QString, QIcon>::~QCache (this=0x7ffff126a3a0 <(anonymous namespace)::Q_QGS_qtIconCache::innerFunction()::holder>, __in_chrg=<optimized out>)
    at ../../include/QtCore/../../src/corelib/tools/qcache.h:87
#12 (anonymous namespace)::IconCache::~IconCache (this=0x7ffff126a3a0 <(anonymous namespace)::Q_QGS_qtIconCache::innerFunction()::holder>, __in_chrg=<optimized out>) at image/qicon.cpp:98
#13 (anonymous namespace)::Q_QGS_qtIconCache::Holder::~Holder (this=0x7ffff126a3a0 <(anonymous namespace)::Q_QGS_qtIconCache::innerFunction()::holder>, __in_chrg=<optimized out>)
    at image/qicon.cpp:108
#14 0x00007fffef549ff8 in __run_exit_handlers (status=0, listp=0x7fffef8d45f8 <__exit_funcs>, run_list_atexit=run_list_atexit@entry=true) at exit.c:82
#15 0x00007fffef54a045 in __GI_exit (status=<optimized out>) at exit.c:104
#16 0x00005555556b6a83 in exit_application (status=<optimized out>) at /build/wireshark-7bKlj5/wireshark-2.6.8/wireshark-qt.cpp:174
#17 0x00005555556b2296 in main (argc=1, qt_argv=<optimized out>) at /build/wireshark-7bKlj5/wireshark-2.6.8/wireshark-qt.cpp:984

I was not able to reproduce this issue with a Wireshark build from git
using `cmake -GNinja -DCMAKE_BUILD_TYPE=Debug -DENABLE_ASAN=1
~/wireshark && ninja wireshark`:

* master v3.1.0rc0-1166-g1e7f85e02f66
* master-3.0 v3.0.3rc0-46-gd094b56a9b4e

I can reproduce the crash with the same build settings and:

* master-2.6 v3.1.0rc0-1168-gc0822c187b

No idea what has changed since 3.0, but I guess you can safely upgrade
to Wireshark 3.0 now to fix this issue.

-- 
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Packages, which is subscribed to appmenu-qt5 in Ubuntu.
https://bugs.launchpad.net/bugs/1803808

Title:
  wireshark crashed with SIGSEGV in QIcon::~QIcon() under Unity

Status in Wireshark:
  Won't Fix
Status in appmenu-qt5 package in Ubuntu:
  Confirmed
Status in wireshark package in Ubuntu:
  Fix Released

Bug description:
  app crashed after close

  ProblemType: Crash
  DistroRelease: Ubuntu 14.04
  Package: wireshark-qt 2.6.3-1~ubuntu14.04.1
  ProcVersionSignature: Ubuntu 3.16.0-77.99~14.04.1-generic 3.16.7-ckt27
  Uname: Linux 3.16.0-77-generic x86_64
  ApportVersion: 2.14.1-0ubuntu3.29
  Architecture: amd64
  CurrentDesktop: Unity
  Date: Tue Oct 16 13:16:50 2018
  ExecutablePath: /usr/bin/wireshark
  InstallationDate: Installed on 2015-07-27 (1177 days ago)
  InstallationMedia: Ubuntu 14.04.2 LTS "Trusty Tahr" - Release amd64 (20150218.1)
  ProcCmdline: wireshark
  Signal: 11
  SourcePackage: wireshark
  StacktraceTop:
   QIcon::~QIcon() () from /usr/lib/x86_64-linux-gnu/libQt5Gui.so.5
   ?? () from /usr/lib/x86_64-linux-gnu/libQt5Gui.so.5
   ?? () from /usr/lib/x86_64-linux-gnu/libQt5Gui.so.5
   ?? () from /usr/lib/x86_64-linux-gnu/libQt5Gui.so.5
   QIcon::~QIcon() () from /usr/lib/x86_64-linux-gnu/libQt5Gui.so.5
  Title: wireshark crashed with SIGSEGV in QIcon::~QIcon()
  UpgradeStatus: No upgrade log present (probably fresh install)
  UserGroups: adm cdrom dialout dip lpadmin plugdev sambashare sudo wireshark

  (Reported originally as a private bug, this bug does not contain
  sensitive information)

  This is also reported as an error many times:
  https://errors.ubuntu.com/problem/ac9b86e48c6b6b5792c1128a836ba63213d62b44

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