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import QtQuick 1.0 QtObject { id: root property int a property variant b Component.onCompleted: { try { root.a = undefined; } catch(e) { console.log (e.fileName + ":" + e.lineNumber + ":" + e); } try { root.a = "Hello"; } catch(e) { console.log (e.fileName + ":" + e.lineNumber + ":" + e); } } }