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  1. Qt
  2. QTBUG-89892

crash when assigning null to anchors.horizontalCenter

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    Details

    • Platform/s:
      All
    • Commits:
      d250e0070701e9c511ef5b1fb0d23995872ad844 (qt/qtdeclarative/6.1) 8ef947deab6c9345ddac2d96dc60f2490974c1df (qt/tqtc-qtdeclarative/5.15) b65935469440dbe869de163e2cd8426ec9e1b461 (qt/qtdeclarative/6.0)

      Description

      The following code snippet crashes the process, it was working in Qt 5.9:

      import QtQuick 2.0
      Item {
          anchors.horizontalCenter: null
      }
      

      With the following warning:

      Invalid property assignment: unsupported type "QQuickAnchorLine" - Assigning null to incompatible properties in QML is deprecated. This will become a compile error in future versions of Qt.

      While the warning is useful to fix the issue, it shouldn't crash.

      1  __pthread_kill                                                                                      (x86_64) /usr/lib/system/libsystem_kernel.dylib       0x7fff7303a33a 
      2  pthread_kill                                                                                        (x86_64) /usr/lib/system/libsystem_pthread.dylib      0x7fff730f6e60 
      3  abort                                                                                               (x86_64) /usr/lib/system/libsystem_c.dylib            0x7fff72fc1808 
      4  qt_message_fatal(QtMsgType, QMessageLogContext const&, QString const&)                              qlogging.cpp                                     1892 0x10ade351d    
      5  QMessageLogger::fatal(const char *, ...) const                                                      qlogging.cpp                                     890  0x10c14e9d1    
      6  qt_assert(const char *, const char *, int)                                                          qglobal.cpp                                      3119 0x10c14c936    
      7  QQmlObjectCreator::setPropertyValue(QQmlPropertyData const *, QV4::CompiledData::Binding const *)   qqmlobjectcreator.cpp                            634  0x107f11bd5    
      8  QQmlObjectCreator::setPropertyBinding(QQmlPropertyData const *, QV4::CompiledData::Binding const *) qqmlobjectcreator.cpp                            1137 0x107f082de    
      9  QQmlObjectCreator::setupBindings(bool)                                                              qqmlobjectcreator.cpp                            782  0x107f0a47a    
      10 QQmlObjectCreator::populateInstance(int, QObject *, QObject *, QQmlPropertyData const *)            qqmlobjectcreator.cpp                            1590 0x107f17669    
      11 QQmlObjectCreator::setPropertyBinding(QQmlPropertyData const *, QV4::CompiledData::Binding const *) qqmlobjectcreator.cpp                            871  0x107f035a4    
      12 QQmlObjectCreator::setupBindings(bool)                                                              qqmlobjectcreator.cpp                            782  0x107f0a47a    
      13 QQmlObjectCreator::populateInstance(int, QObject *, QObject *, QQmlPropertyData const *)            qqmlobjectcreator.cpp                            1590 0x107f17669    
      14 QQmlObjectCreator::createInstance(int, QObject *, bool)                                             qqmlobjectcreator.cpp                            1371 0x107eff316    
      15 QQmlObjectCreator::setPropertyBinding(QQmlPropertyData const *, QV4::CompiledData::Binding const *) qqmlobjectcreator.cpp                            832  0x107f02b0e    
      16 QQmlObjectCreator::setupBindings(bool)                                                              qqmlobjectcreator.cpp                            782  0x107f0a47a    
      17 QQmlObjectCreator::populateInstance(int, QObject *, QObject *, QQmlPropertyData const *)            qqmlobjectcreator.cpp                            1590 0x107f17669    
      18 QQmlObjectCreator::createInstance(int, QObject *, bool)                                             qqmlobjectcreator.cpp                            1371 0x107eff316    
      19 QQmlObjectCreator::create(int, QObject *, QQmlInstantiationInterrupt *, int)                        qqmlobjectcreator.cpp                            214  0x107efb825    
      20 QQmlComponentPrivate::beginCreate(QQmlRefPointer<QQmlContextData>)                                  qqmlcomponent.cpp                                934  0x107c286c3    
      21 QQmlComponent::beginCreate(QQmlContext *)                                                           qqmlcomponent.cpp                                887  0x107c27dd5    
      22 QQmlComponentPrivate::doBeginCreate(QQmlComponent *, QQmlContext *)                                 qqmlcomponent.cpp                                371  0x107c20adc    
      23 QQmlComponent::create(QQmlContext *)                                                                qqmlcomponent.cpp                                822  0x107c27635    
      24 QQmlApplicationEnginePrivate::finishLoad(QQmlComponent *)                                           qqmlapplicationengine.cpp                        154  0x107baaf94    
      25 QQmlApplicationEnginePrivate::startLoad(QUrl const&, QByteArray const&, bool)                       qqmlapplicationengine.cpp                        138  0x107baa919    
      26 QQmlApplicationEngine::load(QUrl const&)                                                            qqmlapplicationengine.cpp                        283  0x107bac495    
      27 main                                                                                                main.cpp                                         41   0x1000085b4    
      28 start                                                                                               (x86_64) /usr/lib/system/libdyld.dylib                0x7fff72ef2cc9 
      

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            Assignee:
            ulherman Ulf Hermann
            Reporter:
            rawoul Arnaud Vrac
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              Dates

              Created:
              Updated:
              Resolved:

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