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Details

Type: Suggestion
Resolution: Done
Priority: P2: Important
Fix Version/s: 6.5
Affects Version/s: None
Component/s: QML: Compiler
Labels:
- Reported_by_support_standard

Commits:
95228f0e6 (dev), 3eb726a49 (6.5)

Description

Code

import QtQuick

Window {
    width: 640
    height: 480
    visible: true

    Image {
        visible: source !== Qt.url("")
    }
}

Compiler warning

Warning: main.qml:9:32: Could not compile binding for visible: Cannot generate efficient code for equality comparison on non-primitive types QJSValue of QJSValue and QJSValue of (component in Z:/Projects/build-test-Desktop_Qt_6_5_0_MSVC2019_64bit-Debug/main.qml)::source with type QUrl [compiler]
        visible: source !== Qt.url("")
                               ^^^