Segmentation fault in Qt6.5.3 for linux

GWJ0324

I meet a segmentation fault in Qt6.5.3 for Linux.When I use the same code in Qt6.5.3 for Windows,it's all right.My code is as following.It exited at KeyBoardInfo.xxxsignal();

//GCTextField.qml
import QtQuick 2.15
import QtQuick.Controls.Basic 2.15
import WYGC
import GCSingleton
TextField {
    id: control
    width: 161
    height: 56
    text: "---"
    font.pixelSize: 30
    horizontalAlignment: Text.AlignHCenter
    verticalAlignment: Text.AlignVCenter
    inputMethodHints: Qt.ImhDigitsOnly
    property string oldDataId : "OvenTempSet"
    property string range: "[0,999]"
    signal ggg(string v)
    background: Rectangle {
        radius: height / 2
        border.width: 2
        color: control.enabled ? "transparent" : "#c5c5c7"
        border.color: control.enabled ? (control.acceptableInput ? "#3286FF" : "#b30b00") : "#8a8a8a"
    }

    onFocusChanged: {        
        if(control.focus === true) {            
            if(inputMethodHints === Qt.ImhDigitsOnly){                
                if(KeyBoardInfo != null && typeof(KeyBoardInfo) != "undefined") {                    
                    //Here the segmentation fault occured.
                    KeyBoardInfo.xxxsignal();
                }                
                KeyBoardInfo.keyBoardInfoVisible = true;
            }else{                
                KeyBoardInfo.keyBoardInfoVisible = false;
            }    
            var strls = Database.getInputOldData(control.oldDataId);
            if(strls.length >= 6) {                
                KeyBoardInfo.oldData = strls[0];
                KeyBoardInfo.oldData1 = strls[1];
                KeyBoardInfo.oldData2 = strls[2];
                KeyBoardInfo.oldData3 = strls[3];
                KeyBoardInfo.oldData4 = strls[4];
                KeyBoardInfo.oldData5 = strls[5];
            }            
            KeyBoardInfo.range = range
            con.enabled = true;
        }else {
            con.enabled = false;
        }
    }
    Keys.onReleased: (event) => {
        switch(event.key){
        case Qt.Key_C:
            control.text = 0;
            break;
        }
    }    

    onEditingFinished: {
        Database.updateOldData(oldDataId,text);
        parent.focus = true;
    }

    Connections {
        id: con
        enabled: false
        target: KeyBoardInfo
        function onSelectOldData(str) {
            console.log(str);
            if(str !== "---") {
                control.text = str;
            }
        }
    }
}

//KeyBoardInfo.qml
pragma Singleton
import QtQuick 6.5
import QtQuick.Studio.Application

QtObject {
    property string oldData: "111"
    property string oldData1: "222"
    property string oldData2: "333"
    property string oldData3: "444"
    property string oldData4: "555"
    property string oldData5: "666"
    property string range: "[0.00,999.00]"
    signal selectOldData(string str);    
    signal xxxsignal();
    property bool keyBoardInfoVisible: true

    property string range_0_1_2: "[0.00,1.00]"
    property var validator_0_1_2: DoubleValidator{
        top: 1.00
        bottom: 0.00
        decimals: 2
        notation: DoubleValidator.StandardNotation
    }
}

The stack of function is strange.It displayed "??".I have already added the Qt sources.

I'm not sure what exactly happened.

GWJ0324

I'm sorry for my question.I found that I make a mistake.Actually I use the Qt6.5.0 in Windows system.And then I install the Qt6.5.3 on the Windows System,the same error occured.I think it's a bug in Qt6.5.3 Version.