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  1. Qt
  2. QTBUG-119395

crash on QML property bindings

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    • 87d27d065 (dev), d8555a970 (6.6), 08e62e3eb (tqtc/lts-6.5)

      I have a binding to an array reduce function, looking like that:

       

      Item {
    property int preferredHeight: mainItem.children.reduce(maximumImplicitHeightReducer, 0) + topPadding + bottomPadding
    function maximumImplicitHeightReducer(accumulator: real, item: Item): real {
        return Math.max(accumulator, item.implicitHeight);
    }

      This generates the attached crash log on startup.

       

       

      If i replace the call to the function maximumImplicitHeightReducer to an inline arrow function like that:

      property int preferredHeight: mainItem.children.reduce((accumulator, item) => {
        return Math.max(accumulator, item.implicitHeight);
    }, 0) + topPadding + bottomPadding

      then the crash goes away

        1. backtrace.txt
          5 kB
        For Gerrit Dashboard: QTBUG-119395
        # Subject Branch Project Status CR V
        523914,2 QML: Don't crash when calling coerceAndCall() with null thisObject dev qt/qtdeclarative Status: MERGED +2 0
        524086,2 QML: Don't crash when calling coerceAndCall() with null thisObject 6.6 qt/qtdeclarative Status: MERGED +2 0
        524152,3 QML: Don't crash when calling coerceAndCall() with null thisObject tqtc/lts-6.5 qt/tqtc-qtdeclarative Status: MERGED +2 0

            ulherman Ulf Hermann
            notmart Marco Martin
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              Created:
              Updated:
              Resolved:

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