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Details

Type: Bug
Resolution: Done
Priority: P1: Critical
Fix Version/s: 6.2.7, 6.2, 6.4, 6.5.0 Beta1, 6.5
Affects Version/s: 6.5
Component/s: QML: Compiler
Labels:
- qmlnext

Commits:
8f827de1a1 (qt/qtdeclarative/dev) 8f827de1a1 (qt/tqtc-qtdeclarative/dev) 7e81ff6835 (qt/tqtc-qmlcompilerplus/6.2) 7e81ff6835 (qt/tqtc-qmlcompilerplus/6.2.7), 17b72353f (6.4)

Description

Calling methods with destructured arguments via

import QtQuick

Window {
    width: 640
    height: 480
    visible: true
    title: qsTr("Hello World")

    Component.onCompleted: {
        let f = console.error;
        const data = [f, ["That is great!"]]
        data[0](...data[1]);            // Fails
        //data[0].apply(null, data[1]); // Works
    }
}

leads just to

[1/10 385.8/sec] Generating variadic/main.qml
[2/10 746.0/sec] Generating variadic/DetachableConnections.qml
[3/10 347.4/sec] Running qmlimportscanner for appvariadic
[4/10 310.8/sec] Running rcc for resource appvariadic_raw_qml_0
[5/10 111.6/sec] Generating .rcc/qmlcache/appvariadic_DetachableConnections_qml.cpp
[6/10 35.6/sec] Generating .rcc/qmlcache/appvariadic_main_qml.cpp
FAILED: .rcc/qmlcache/appvariadic_main_qml.cpp /home/prcs1076/tmp/build-variadic-Desktop_Qt_6_5_0_GCC_64bit-Debug/.rcc/qmlcache/appvariadic_main_qml.cpp 
cd /home/prcs1076/tmp/build-variadic-Desktop_Qt_6_5_0_GCC_64bit-Debug && /home/prcs1076/Qt/Tools/CMake/bin/cmake -E make_directory /home/prcs1076/tmp/build-variadic-Desktop_Qt_6_5_0_GCC_64bit-Debug/.rcc/qmlcache && /home/prcs1076/Qt/6.5.0/gcc_64/./libexec/qmlsc --bare --resource-path /variadic/main.qml -I /home/prcs1076/tmp/build-variadic-Desktop_Qt_6_5_0_GCC_64bit-Debug -I /home/prcs1076/Qt/6.5.0/gcc_64/./qml -i /home/prcs1076/tmp/build-variadic-Desktop_Qt_6_5_0_GCC_64bit-Debug/variadic/qmldir --resource /home/prcs1076/tmp/build-variadic-Desktop_Qt_6_5_0_GCC_64bit-Debug/.rcc/qmake_variadic.qrc --resource /home/prcs1076/tmp/build-variadic-Desktop_Qt_6_5_0_GCC_64bit-Debug/.rcc/appvariadic_raw_qml_0.qrc -o /home/prcs1076/tmp/build-variadic-Desktop_Qt_6_5_0_GCC_64bit-Debug/.rcc/qmlcache/appvariadic_main_qml.cpp /home/prcs1076/tmp/variadic/main.qml
ninja: build stopped: subcommand failed.

, leaving you in the dark what the problem is. Takes a while to find that if you've hundreds of QML files and there's not even a hint about the file which is responsible for that.