QtCreator crashing when a particular file is saved

peteispo

I have a fairly big QtQuick project, and I'm trying to work on in with QtCreator (Qt Creator 4.4.1 based on Qt 5.9.2, on Ubuntu 16.04)
On saving one of the files in the project (or sometimes just editing it...) QtCreator crashes completely, and this is fairly consistent.
Running from the command line, I get to see an error dumped to the console as it crashes: here it is in all it's unfathomable glory:

Exception: "InvalidModelNodeException"
Function:  "selectedNodes"
File:      "/work/build/qt-creator/src/plugins/qmldesigner/designercore/model/model.cpp"
Line:      1452
"file: /work/build/qt-creator/src/plugins/qmldesigner/designercore/model/model.cpp, function: selectedNodes, line: 1452"
"
/home/pete/Qt/Tools/QtCreator/lib/qtcreator/plugin/libQmlDesigner.so(_ZN11QmlDesigner9ExceptionC2EiRK10QByteArrayS3_+0xc8) [0x7f613f9c0698]
/home/pete/Qt/Tools/QtCreator/lib/qtcreator/plugins/libQmlDesigner.so(_ZN11QmlDesigner25InvalidModelNodeExceptionC1EiRK10QByteArrayS3_+0xe) [0x7f613f9c13ae]
/home/pete/Qt/Tools/QtCreator/lib/qtcreator/plugins/libQmlDesigner.so(+0x16089b) [0x7f613f9a589b]
/home/pete/Qt/Tools/QtCreator/lib/qtcreator/plugins/libQmlDesigner.so(_ZNK11QmlDesigner12AbstractView26hasSingleSelectedModelNodeEv+0x17) [0x7f613f971827]
/home/pete/Qt/Tools/QtCreator/lib/qtcreator/plugins/libQmlDesigner.so(+0x2bddc4) [0x7f613fb02dc4]
/home/pete/Qt/Tools/QtCreator/lib/qtcreator/plugins/libQmlDesigner.so(_ZN11QmlDesigner14AbstractAction13updateContextEv+0x3c) [0x7f613fa351bc]
/home/pete/Qt/Tools/QtCreator/lib/qtcreator/plugins/libQmlDesigner.so(+0x1efc69) [0x7f613fa34c69]
/home/pete/Qt/Tools/QtCreator/lib/qtcreator/plugins/libQmlDesigner.so(+0x15ea58) [0x7f613f9a3a58]
/home/pete/Qt/Tools/QtCreator/lib/qtcreator/plugins/libQmlDesigner.so(+0x165c34) [0x7f613f9aac34]
/home/pete/Qt/Tools/QtCreator/lib/qtcreator/plugins/libQmlDesigner.so(_ZN11QmlDesigner15VariantProperty26setDynamicTypeNameAndValueERK10QByteArrayRK8QVariant+0x26d) [0x7f613f9c417d]
/home/pete/Qt/Tools/QtCreator/lib/qtcreator/plugins/libQmlDesigner.so(+0x1911fe) [0x7f613f9d61fe]
/home/pete/Qt/Tools/QtCreator/lib/qtcreator/plugins/libQmlDesigner.so(+0x1940f3) [0x7f613f9d90f3]
/home/pete/Qt/Tools/QtCreator/lib/qtcreator/plugins/libQmlDesigner.so(+0x19ad48) [0x7f613f9dfd48]
/home/pete/Qt/Tools/QtCreator/lib/qtcreator/plugins/libQmlDesigner.so(+0x19d7c8) [0x7f613f9e27c8]
/home/pete/Qt/Tools/QtCreator/lib/qtcreator/plugins/libQmlDesigner.so(_ZN11QmlDesigner12RewriterView12amendQmlTextEv+0x4e) [0x7f613f974a7e]
/home/pete/Qt/Tools/QtCreator/bin/../lib/Qt/lib/libQt5Core.so.5(_ZN11QMetaObject8activateEP7QObjectiiPPv+0x986) [0x7f615dbbbb96]
/home/pete/Qt/Tools/QtCreator/bin/../lib/Qt/lib/libQt5Core.so.5(_ZN6QTimer7timeoutENS_14QPrivateSignalE+0x27) [0x7f615dbc8057]
/home/pete/Qt/Tools/QtCreator/bin/../lib/Qt/lib/libQt5Core.so.5(_ZN6QTimer10timerEventEP11QTimerEvent+0x28) [0x7f615dbc8328]
/home/pete/Qt/Tools/QtCreator/bin/../lib/Qt/lib/libQt5Core.so.5(_ZN7QObject5eventEP6QEvent+0x7b) [0x7f615dbbc77b]
/home/pete/Qt/Tools/QtCreator/bin/../lib/Qt/lib/libQt5Widgets.so.5(_ZN19QApplicationPrivate13notify_helperEP7QObjectP6QEvent+0x9c) [0x7f615eeed5ec]
/home/pete/Qt/Tools/QtCreator/bin/../lib/Qt/lib/libQt5Widgets.so.5(_ZN12QApplication6notifyEP7QObjectP6QEvent+0x227) [0x7f615eef4a17]
/home/pete/Qt/Tools/QtCreator/bin/../lib/Qt/lib/libQt5Core.so.5(_ZN16QCoreApplication15notifyInternal2EP7QObjectP6QEvent+0x108) [0x7f615db912b8]
/home/pete/Qt/Tools/QtCreator/bin/../lib/Qt/lib/libQt5Core.so.5(_ZN14QTimerInfoList14activateTimersEv+0x46e) [0x7f615dbe308e]
/home/pete/Qt/Tools/QtCreator/bin/../lib/Qt/lib/libQt5Core.so.5(+0x2cb8a9) [0x7f615dbe38a9]
/lib/x86_64-linux-gnu/libglib-2.0.so.0(g_main_context_dispatch+0x2a7) [0x7f6159709197]
/lib/x86_64-linux-gnu/libglib-2.0.so.0(+0x4a3f0) [0x7f61597093f0]
/lib/x86_64-linux-gnu/libglib-2.0.so.0(g_main_context_iteration+0x2c) [0x7f615970949c]
/home/pete/Qt/Tools/QtCreator/bin/../lib/Qt/lib/libQt5Core.so.5(_ZN20QEventDispatcherGlib13processEventsE6QFlagsIN10QEventLoop17ProcessEventsFlagEE+0x5f) [0x7f615dbe3baf]
/home/pete/Qt/Tools/QtCreator/bin/../lib/Qt/lib/libQt5Core.so.5(_ZN10QEventLoop4execE6QFlagsINS_17ProcessEventsFlagEE+0xea) [0x7f615db8f8aa]
/home/pete/Qt/Tools/QtCreator/bin/../lib/Qt/lib/libQt5Core.so.5(_ZN16QCoreApplication4execEv+0x84) [0x7f615db98134]
/home/pete/Qt/Tools/QtCreator/bin/qtcreator() [0x409aa7]
/lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0xf0) [0x7f615c83e830]
/home/pete/Qt/Tools/QtCreator/bin/qtcreator() [0x40a401]
"
terminate called after throwing an instance of 'QmlDesigner::InvalidModelNodeException*'
Aborted

The file in question is pretty small - it's meant to be displaying dynamic components with a title bar and a Flickable holding a ColumnLayout to which the dynamic stuff will be added

import QtQuick 2.7
import QtQuick.Layouts 1.3
import QtQuick.Controls 2.2

ColumnLayout {
    property variant data
    property alias clData: clData
    Text {
        text: qsTr("Public Data")
        anchors.fill: parent
        verticalAlignment: Text.AlignVCenter
        horizontalAlignment: Text.AlignHCenter
        font.pixelSize: 32
        font.bold: true
    }

    Flickable {
        id: flickable
        Layout.fillHeight: true
        Layout.fillWidth: true
        clip: true
        contentHeight: clData.height
        ColumnLayout {
            id: clData
            property int leftWidth: parent.width * 0.25
            anchors.right: parent.right
            anchors.rightMargin: 0
            anchors.left: parent.left
            anchors.leftMargin: 0
            anchors.top: parent.top
            anchors.topMargin: 0
            StartupPublicDataRow {
                title: qsTr("Project Start")
                value: "today"
                lhsplit: 25
                anchors.fill: parent
            }
        }
    }
}

and the referenced StartupPublicDataRow.qml is like this:

import QtQuick 2.7
import QtQuick.Layouts 1.3

RowLayout {
    property string title: 'Title'
    property string value: 'Value'
    property double lhsplit: 25
    Layout.fillWidth: true
    Text {
        text: title
        font.bold: true
        font.pointSize: 10
        wrapMode: Text.WordWrap
        Layout.maximumWidth: parent.width * lhsplit / 100
    }
    Text {
        text: value
        Layout.fillWidth: true
        font.pointSize: 10
        wrapMode: Text.WordWrap
    }
}

aha_1980

@peteispo: Please file a bug report on bugreports.qt.io

Even if you had done something wrong, QtCreator should not crash.

peteispo

@aha_1980 I thought so too, but I wanted to check that it wasn't an obvious mistake...