[SailfishDevel] Seg fault with SilicaListView

[Sylvain B.]

Hello,
I am facing a Segmentation Fault with a SilicaListView.
I struggled a little to understand the cause but I finally managed to build a simple example which reproduces it.

What we need:
- A SilicaListView with a custom section: It works with a simple SectionHeader, but crashes when I use a Row (I'd like to put multiple components in it).
- A model with a certain amount of data:
  - 10 sections with 2 items in each: OK
  - 10 sections with 3 items in each: KO
  - 15 sections with 2 items in each: KO

How to repro:
Start form the HelloSailors default example. Replace the content of FirstPage.qml by the code provided below.
Each item is clickable. Click on any of them to go to the second page. Come back. You will get:
bash: line 1: 13678 Segmentation fault      DISPLAY=:0.0 /opt/sdk/HelloWorld/usr/bin/HelloWorld

Sometimes it works one time and crashes on the second attempt.

Thank you.

PS: I tried to run the app in debug mode but I just get a Dissasembler with hexa content. Is it possible to get a stacktrace?

-- 

Page {
    id: page


    SilicaListView {
        id: listView
        anchors.fill: parent


        model: ListModel {}


        header: PageHeader { title: "Buggy page" }


        section {
            property: 'category'


            delegate: Row {
                spacing: Theme.paddingMedium
                height: Theme.itemSizeExtraSmall
                anchors.right: parent.right
                anchors.rightMargin: Theme.paddingLarge


                Label {
                    text: section
                    font.pixelSize: Theme.fontSizeSmall
                    color: Theme.highlightColor
                }
            }
            // A simple SectionHeader works fine
//            delegate: SectionHeader {
//                text: section
//                height: Theme.itemSizeSmall
//            }
        }


        VerticalScrollDecorator {}


        delegate:  ListItem {
            id: listItem


            Column {
                anchors.verticalCenter: parent.verticalCenter


                Label {
                    id: mainText
                    x: Theme.paddingLarge
                    text: model.name
                    font.weight: Font.Bold
                    font.pixelSize: Theme.fontSizeSmall
                }


                Label {
                    id: subText
                    x: Theme.paddingLarge
                    text: model.subname
                    font.weight: Font.Light
                    font.pixelSize: Theme.fontSizeExtraSmall
                    color: Theme.secondaryColor
                }
            }


            onClicked: pageStack.push(Qt.resolvedUrl("SecondPage.qml"));


        }


        Component.onCompleted: {
            for (var i = 0; i < 30; ++i) {
                model.append({ 'category': 'cat' + Math.floor(i / 2),
                               'name': 'name' + i,
                               'subname': 'subname' });
            }
        }
    }
}
 		 	   		  
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