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[Bug 1571158] Re: Crash in QXcbWindow::setParent() due to NULL xcbScreen()

To: group.of.nepali.translators@xxxxxxxxxxxxxxxxxxx
From: Launchpad Bug Tracker <1571158@xxxxxxxxxxxxxxxxxx>
Date: Mon, 30 May 2016 07:56:51 -0000
Reply-to: Bug 1571158 <1571158@xxxxxxxxxxxxxxxxxx>
Sender: bounces@xxxxxxxxxxxxx

This bug was fixed in the package qtbase-opensource-src - 5.5.1+dfsg-
16ubuntu7.1

---------------
qtbase-opensource-src (5.5.1+dfsg-16ubuntu7.1) xenial; urgency=medium

  * debian/patches/Blacklist-Mali-T760-Mali-T720-from-supporting-BGRA.patch
    - Backport from upstream 5.6 (LP: #1557915) (LP: #1559906)
  * Add two patches from stable Qt 5.6 branch to fix another case of
    QXcbWindow crashes (LP: #1571158).
    - debian/patches/Fix-crash-because-of-NULL-screen-in-QXcbWindow.patch
    - debian/patches/QtGui-Don-t-set-a-screen-to-a-child-window.patch
  * Fix drag and drop issues with patches from upstream. (LP: #1577313)
    - debian/patches/xcb-Fix-drag-and-drop-to-Emacs.patch
    - debian/patches/xcb-Fix-drag-and-drop-to-applications-like-Emacs-and.patch

 -- Timo Jyrinki <timo-jyrinki@xxxxxxxxxx>  Mon, 02 May 2016 12:24:35
+0000

** Changed in: qtbase-opensource-src (Ubuntu Xenial)
       Status: Fix Committed => Fix Released

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https://bugs.launchpad.net/bugs/1571158

Title:
  Crash in QXcbWindow::setParent() due to NULL xcbScreen()

Status in qtbase-opensource-src package in Ubuntu:
  Fix Released
Status in qtbase-opensource-src source package in Xenial:
  Fix Released

Bug description:
  [Impact]

  Application crash in certain situation.

  [Test Case]

  See bug comments for test app.

  [Regression Potential]]

  The fixes are in the currently release upstream LTS release (Qt 5.6),
  but they do touch a core component of (X11) Qt so eg multi-monitor
  setups should be tested for no regressions.

  --

  Qt 5.5.1 has problem to "[QTBUG-50081] Crash in
  QXcbWindow::setParent() due to NULL xcbScreen()".

  This is already fixed in upstream.
  https://bugreports.qt.io/browse/QTBUG-50081

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