s390x build/run failure with Qt 5.6 gsettings-qt and ubuntu-ui-toolkit

[Timo Jyrinki]

Ubuntu UI Toolkit FTBFS:s on s390x when used with Qt 5.6: https://launchpad.net/~ci-train-ppa-service/+archive/ubuntu/landing-011/+build/9600469 (Error: SEGV)

gsettings-qt segmentation fault is similar and may be faster to debug https://launchpadlibrarian.net/254348976/buildlog_ubuntu-xenial-s390x.gsettings-qt_0.1+16.04.20160329-0ubuntu2~xenialoverlay1~2_BUILDING.txt.gz

It is probably during executing 'qmlplugindump' (via build time Qt generated wrapper.sh script), which is from qtdeclarative-opensource-src.

More information about Qt 5.6 at https://wiki.ubuntu.com/Touch/QtTesting

[Dimitri John Ledkov (xnox)]

Please use the <arch> tags for arch specific issues. E.g. I monitor and look into bugs with "s390x" tag, and e.g. apport / ubuntu-bug automatically add such tags too.

[Timo Jyrinki (timo-jyrinki)]

There is a general s390x (and powerpc but not ppc64el) problem with Qt 5.6 regarding some QML executions.

[Dmitry Shachnev (mitya57)]

May be related to https://bugreports.qt.io/browse/QTBUG-54717 which I just filed.

[Timo Jyrinki (timo-jyrinki)]

Indeed, the fix proposed in qtdeclarative to that bug fixes the issue, great!

[Timo Jyrinki (timo-jyrinki)]

(Original changelog entry didn't have the bug numbers included)

qtdeclarative-opensource-src (5.6.1-4ubuntu1~4) yakkety; urgency=medium

  * Merge with Debian.
  * Update symbols.
  * Drop backported upstream patches now included:
    - Add-QQuickAsyncImageProvider.patch
    - Add-isTabFence-private-flag.patch
    - Don-t-change-the-currentItem-after-a-viewport-resize.patch
    - Don-t-make-currentIndex-skip-an-extra-item-on-remova.patch
    - Fix-memory-leak-when-using-async-image-providers.patch
    - Flickable-avoid-perturbing-the-timeline-further-whil.patch
    - Image-fix-crash-when-switching-between-multiple-scre.patch
    - Make-sure-we-stop-animators-if-they-are-yet-to-be-st.patch
    - MultiPointTouchArea-Fixed-released-duplication-on-mo.patch
    - QQuickItem-fix-an-infinite-loop-nextItemInFocusChain.patch
    - WIP-QQuickItem-fix-another-infinite-loop-in-nextItem.patch
    - qmlplugindump-Don-t-try-to-import-Qt.test.qtestroot.patch
  * Refresh QML cache and test binary location patches to apply.
  * Modify QML cache patch to Qt 5.6 and 5.6.1 changes. (LP: #1556824)
  * Mark private symbols.
  * Update for Qt 5.6.1:
    - Drop debian/patches/Fix-crash-in-hasAtlasTexture.patch now in upstream.
  * Add build dep on libqt5opengl5-dev to execute a test successfully
  * debian/patches/V4-Always-set-the-tag-when-boxing-a-pointer-in-QV4-V.patch
    debian/patches/Fix-QQmlEngine-crash-on-big-endian-64-bit-architectu.patch:
    - Fix a crasher affecting s390x (LP: #1567481) (LP: #1572496) (LP: #1567776)