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  1. Qt
  2. QTBUG-106120

Segmentation Fault, while debugging qml

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Details

    • Bug
    • Resolution: Duplicate
    • P1: Critical
    • None
    • 6.3.1
    • Quick: Core Declarative QML
    • None
    • Linux x86(Linux Mint 20.2 Cinnamon 5.0.7)
    • Linux/X11

    Description

      Hi, I ran into the following problem. When using QML debugging, segmentation fault occurs immediately with the following stack

      1 QFont::family() const 0x7ffff7585a55
      2 QQuickFontValueType::family() const 0x7ffff0da2b12
      3 QQuickFontValueType::qt_static_metacall(QObject *, QMetaObject::Call, int, void * *) 0x7ffff0da31a0
      4 QMetaProperty::read(QObject const *) const 0x7ffff6cbe8ea
      5 QQmlWatchProxy::notifyValueChanged() 0x7ffff10b812f
      6 QQmlWatcher::addPropertyWatch(int, QObject *, unsigned int, QMetaProperty const&) 0x7ffff10b93c7
      7 QQmlWatcher::addWatch(int, unsigned int) 0x7ffff10b9755
      8 QQmlEngineDebugServiceImpl::processMessage(QByteArray const&) 0x7ffff10b2e41
      9 QObject::event(QEvent *) 0x7ffff6d01097
      10 QCoreApplication::notifyInternal2(QObject *, QEvent *) 0x7ffff6caf0fa
      11 QCoreApplicationPrivate::sendPostedEvents(QObject *, int, QThreadData *) 0x7ffff6cb2384
      12 postEventSourceDispatch(_GSource *, int ( *)(void *), void *) 0x7ffff6f6bc67
      13 g_main_context_dispatch 0x7ffff617417d
      14 ?? 0x7ffff6174400
      15 g_main_context_iteration 0x7ffff61744a3
      16 QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) 0x7ffff6f6b578
      17 QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) 0x7ffff6cbaf1b
      18 QCoreApplication::exec() 0x7ffff6cb69e6
      19 main main.cpp 19 0x555555556779

       

      If I remove "font.bold: true"(in main.qml) error does not occur. Moreover, if you set any property for fonts, segfault also crashes. There are no such errors during the release build.

      Source code in attachments

       

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        Issue Links

          duplicates

          Bug - A problem which impairs or prevents the functions of the product. QTBUG-104379 [REG 6.3.0 -> 6.3.1] Crash when trying to debug QML Application

          • P1: Critical - Urgent and Important, will STOP the release if matched with set FixVersion field. This includes regressions from the last version that are not edge cases; Data loss; Build issues; All but the most unlikely crashes/lockups/hanging; Serious usability issues and embarrassing bugs & Bugs critical to a deliverable. This is the highest possible priority for requirements.
          • Closed
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              qt.team.quick.subscriptions Qt Quick and Widgets Team
              artgus Artem Gusev
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              Dates

                Created:
                Updated:
                Resolved:

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