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[Launchpad Bug Tracker <1342694@xxxxxxxxxxxxxxxxxx>]

This bug was fixed in the package mir - 0.6.0+14.10.20140811-0ubuntu1

---------------
mir (0.6.0+14.10.20140811-0ubuntu1) utopic; urgency=medium

  [ Cemil Azizoglu ]
  * New upstream release 0.6.0 (https://launchpad.net/mir/+milestone/0.6.0)
    - mirclient ABI unchanged at 8. Clients do not need rebuilding.
    - mirserver ABI bumped to 24. Servers need rebuilding, but probably don't
      need modification:
      . Host lifecycle event listener for nested servers introduced.
      . Add query function to BasicSurface.
      . The (deprecated) function the_ipc_factory() is now removed.
      . Removed legacy support for overriding the focus controller or the
        frontend shell.
      . Added support for a common type for managing fd's.
      . Moved testdraw library to examples directory.
      . Added support for droping stale frames when a surface becomes exposed.
    - Enhancements:
      . Split underlying data transport out of MirSocketRpcChannel.
      . Introduced two new client-side functions : mir_surface_get_focus and
        mir_surface_get_visibility.
      . Added symbolic names for cursors.
      . Made "shared" code a true shared library.
      . Provide linker scripts to control symbols exported by [mesa|android]
        libmirclientplatform.
      . Correct xcursor loader test to fail properly instead of segfaulting.
      . Make mir::Fd type copy constructible.
      . Miscellaneous packaging related enhancements.
      . Miscellaneous build related enhancements.
      . Added automated test cases for detecting ABI breakage.
      . examples/fingerpaint: Enable frame dropping so it's faster and more
        responsive.
      . mirprotobuf folded into new libmircommon.
      . Don't propagate exceptions to graphics driver code.
      . Dropped unused/minimally used dependencies : boost-filesystem,
        boost-thread, boost-chrono, boost-regex.
      . platform: provide support for customizing Mir's behavior when a
        fatal_error occurs.
      . Expose an interface for touch visualization.
    - Bugs fixed:
      . Mir servers crash with SIGABRT - assertion failed at
        buffer_queue.cpp:136 - "!pending_client_notifications.empty()"
        (LP: #1335481)
      . [regression][hammerhead] Mir fails to start on Nexus 5 & 10 as it
        fails to turn vsync signal on (LP: #1345533)
      . [qtcomp] Random crash in Mir input when running AP tests: [terminate
        called after throwing an instance of '...' what(): assign: File exists]
        when constructing a mir::AsioMainLoop::FDHandler (LP: #1346952)
      . CI builds fail when trying to install libmircommon-dev (LP: #1348518)
      . [regression] Mir 0.6 GL clients crash immediately on startup (Mesa is
        trying to use X11 instead of Mir) (LP: #1350163)
      . qmlscene crashed with SIGSEGV in _M_release() on quit (LP: #1342694)
      . Clients cannot create surfaces when the screen is off (LP: #1344024)
      . The packaging of headers and libraries is confused (LP: #1347522)
      . [regression] Intermittent CI failure in
        ClientLibrary.receives_surface_dpi_value (LP: #1348095)
      . Installing mir-demos also unexpectedly installs *-dev packages
        (LP: #1297100)
      . mir_unit_tests: XCursorLoader.loads_cursors_from_testing_theme crashes
        on N4 (LP: #1342029)
      . [performance] Mir is spending at least 8% of its time in
         __android_log_print() (LP: #1343074)
      . [performance] Mir demo shell spends ~12% of its time in vector
        allocation under DemoRenderer::tessellate_*() (LP: #1349698)
      . mir_client_library_debug.h functions do not have C linkage
        (LP: #1349742)
      . mir client API is missing getters for some surface attributes
        (LP: #1336553)
      . Building Mir outputs lots of warnings about Android logging functions
        in 3rd_party/ (LP: #1348467)
      . The "shared" code should be a shared library (LP: #1341502)
      . Finish the removal of mirprotobuf library (LP: #1351133)
      . Release overlay buffers when screen is turned off (LP: #1350961)
      . mir_demo_server_shell --disable-overlays false renders incorrectly
        on android (partial fix for LP: #1348330)
      . Remember to honor MIR_ENABLE_TESTS and not emit tests if it's disabled
        (LP: #1352800)
      . Make it easier to separate command line options used by Mir from those
        used elsewhere (LP: #1351255)
      . Expose create_native_platform in libmirplatformgraphics.so
        (LP: #1353658)
      . Add versioning and pkg config to libmirplatform (LP: #1293944)
      . unity-system-compositor FTBFS against Mir: undefined reference to
        `...@MIR_CLIENT_8' (LP: #1355021)

  [ Ubuntu daily release ]
  * New rebuild forced
 -- Ubuntu daily release <ps-jenkins@xxxxxxxxxxxxxxxxxxx>   Mon, 11 Aug 2014 19:52:06 +0000

** Changed in: mir (Ubuntu)
       Status: Triaged => Fix Released

-- 
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https://bugs.launchpad.net/bugs/1342694

Title:
  qmlscene crashed with SIGSEGV in _M_release() on quit

Status in Mir:
  Fix Committed
Status in Mir 0.5 series:
  Won't Fix
Status in “mir” package in Ubuntu:
  Fix Released
Status in “qtdeclarative-opensource-src” package in Ubuntu:
  Invalid

Bug description:
  Given the app:

  import Ubuntu.Components 1.1

  MainView {
    applicationName: "blah"

    Button {
      anchors.centerIn: parent
      text: "Quit"
      onClicked: Qt.quit()
    }
  }

  And launching it with:
  $ qmlscene test.qml --desktop_file_hint=/usr/share/applications/webbrowser-app.desktop

  on the phone (sorry for the webbrowser part, bug #1325984).

  On pressing "Quit", the app segfaults.

  ProblemType: Crash
  DistroRelease: Ubuntu 14.10
  Package: qmlscene 5.3.0-3ubuntu7
  Uname: Linux 3.4.0-5-mako armv7l
  ApportVersion: 2.14.4-0ubuntu2
  Architecture: armhf
  Date: Wed Jul 16 12:22:05 2014
  ExecutablePath: /usr/lib/arm-linux-gnueabihf/qt5/bin/qmlscene
  ExecutableTimestamp: 1404724229
  InstallationDate: Installed on 2014-07-15 (0 days ago)
  InstallationMedia: Ubuntu Utopic Unicorn (development branch) - armhf (20140715-115453)
  ProcCmdline: /usr/lib/arm-linux-gnueabihf/qt5/bin/qmlscene test.qml --desktop_file_hint=/usr/share/applications/webbrowser-app.desktop
  ProcCwd: /home/phablet
  Signal: 11
  SourcePackage: qtdeclarative-opensource-src
  StacktraceTop:
   MirConnection::~MirConnection() () from /usr/lib/arm-linux-gnueabihf/libmirclient.so.8
   MirConnection::~MirConnection() () from /usr/lib/arm-linux-gnueabihf/libmirclient.so.8
   mir_connection_release () from /usr/lib/arm-linux-gnueabihf/libmirclient.so.8
   ?? () from /usr/lib/arm-linux-gnueabihf/libubuntu_application_api_touch_mirclient.so.2.1.0
  Title: qmlscene crashed with SIGSEGV in MirConnection::~MirConnection()
  UpgradeStatus: No upgrade log present (probably fresh install)
  UserGroups: adm autopilot cdrom dialout dip nopasswdlogin plugdev sudo tty video

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