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[Michael Zanetti <michael.zanetti@xxxxxxxxxxxxx>]

LauncherModel::applicationRemoved() is connected to
ApplicationManager::rowsAboutToBeRemoved().

The line that crashes is applicationManager->get(index)->appId().
Apparently get() returns a nullptr. However, in rowsAboutToBeRemoved()
items should still be valid so connected parties can handle it.

Reassigning to QtMir.

** Also affects: qtmir
   Importance: Undecided
       Status: New

** Changed in: unity8 (Ubuntu)
       Status: New => Invalid

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https://bugs.launchpad.net/bugs/1489072

Title:
  /usr/bin/unity8:11:LauncherModel::applicationRemoved:LauncherModel::qt_static_metacall:QMetaObject::activate:QMetaObject::activate:QAbstractItemModel::rowsAboutToBeRemoved

Status in QtMir:
  New
Status in unity8 package in Ubuntu:
  Invalid

Bug description:
  The Ubuntu Error Tracker has been receiving reports about a problem
  regarding unity8.  This problem was most recently seen with version
  8.11+15.04.20150821-0ubuntu1, the problem page at
  https://errors.ubuntu.com/problem/1234895fcedd17a4694f5751e485646120c69f8b
  contains more details.

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