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  1. Qt
  2. QTBUG-98859

Implicit conversion to Component doesn't work in inline components

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    • ec25258 (dev), f751745 (6.6)

    Description

      I've discovered yet another bug with inline components.

      In a regular component, you can define a property such like this:

      property Component comp: null

      And later you can override the property like this:

      comp: Item { }

      But not with inline components. The implicit conversion doesn't kick in, and the runtime crashes.

      It does work as expected like this:

      comp: Component { Item { } }

      OK, here is a complete example that reproduces the problem:

      import QtQuick 2.15
import QtQuick.Window 2.15

Window {
  width: 640
  height: 480
  visible: true

  component C1 : Item {
    property Component comp: null
  }

  component C2 : C1 {
    comp: Rectangle { width: 50; height: 50; color: "red" } // still null
  }

  component C3 : C1 {
    comp: Component { Rectangle { width: 50; height: 50; color: "red" } } // ok here
  }

  C2 { id: c2 }
  C3 { id: c3 }

  Component.onCompleted: console.log(c2.comp, c3.comp)
}

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          is duplicated by

          Bug - A problem which impairs or prevents the functions of the product. QTBUG-104798 Crash when using a listview inside an inline component

          • 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

          Bug - A problem which impairs or prevents the functions of the product. QTBUG-106173 qml: Implicit Component wrapping fails in Inline components

          • P2: Important - Urgent, should be fixed, but will not stop the release.
          • Closed

          Bug - A problem which impairs or prevents the functions of the product. QTBUG-115128 Shorthand Component binding does not work inside inline components

          • P2: Important - Urgent, should be fixed, but will not stop the release.
          • Closed
          For Gerrit Dashboard: QTBUG-98859
          # Subject Branch Project Status CR V
          497447,5 QtQml: Create implicit components in inline components early dev qt/qtdeclarative Status: MERGED +2 0
          498129,2 QtQml: Create implicit components in inline components early 6.6 qt/qtdeclarative Status: MERGED +2 0

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              ulherman Ulf Hermann
              dgo dgo
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              Dates

                Created:
                Updated:
                Resolved:

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