[QTBUG-102273] Qt quick compiler produces error in C++ - Qt Bug Tracker

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Details

Type: Bug
Status: Closed
Priority: P1: Critical
Resolution: Done
Affects Version/s: 6.3.0 RC
Fix Version/s: 6.2.5, 6.3.1
Component/s: QML: Compiler
Labels:
None

Platform/s:

All
Commits:
c5b1321711 (qt/tqtc-qmlcompilerplus/6.2) 37fd49d236 (qt/qtdeclarative/6.3) 37fd49d236 (qt/tqtc-qtdeclarative/6.3)

Description

Qt quick compiler produces an error in C++ compilation with this QML code:

import QtQuick 6

Item {
  height: !(parent && parent.visible) ? 100 : 0
}

Generated C++:

// generate_UNot
r2_1 = !aotContext->engine->fromVariant<bool>();

Error:

error: no matching member function for call to 'fromVariant'
r2_1 = !aotContext->engine->fromVariant<bool>();
        ~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~
/Applications/Qt/6.3.0/macos/lib/QtQml.framework/Headers/qjsengine.h:117:14: note: candidate function template not viable: requires single argument 'value', but no arguments were provided
    inline T fromVariant(const QVariant &value)
             ^
1 error generated.

Looks like the conversion between an object and a boolean property into bool causes the problem.