Fix crash in PathView

Change-Id: I259e7af1755ff9615782bbce03fc41ea1957cab3
Task-number: QTBUG-29176
Reviewed-by: Alan Alpert <aalpert@rim.com>

3 files changed, 27 insertions, 3 deletions

diff --git a/src/quick/items/qquickpathview.cpp b/src/quick/items/qquickpathview.cpp
index a58ed599be..a7be50bc11 100644
--- a/src/quick/items/qquickpathview.cpp
+++ b/src/quick/items/qquickpathview.cpp
@@ -193,7 +193,7 @@ void QQuickPathView::initItem(int index, QQuickItem *item)
         if (att) {
             att->m_view = this;
             qreal percent = d->positionOfIndex(index);
-            if (percent < 1.0) {
+            if (percent < 1.0 && d->path) {
                 foreach (const QString &attr, d->path->attributes())
                     att->setValue(attr.toUtf8(), d->path->attributeAt(attr, percent));
                 item->setZ(d->requestedZ);
@@ -227,8 +227,10 @@ QQmlOpenMetaObjectType *QQuickPathViewPrivate::attachedType()
     if (!attType) {
         // pre-create one metatype to share with all attached objects
         attType = new QQmlOpenMetaObjectType(&QQuickPathViewAttached::staticMetaObject, qmlEngine(q));
-        foreach (const QString &attr, path->attributes())
-            attType->createProperty(attr.toUtf8());
+        if (path) {
+            foreach (const QString &attr, path->attributes())
+                attType->createProperty(attr.toUtf8());
+        }
     }
 
     return attType;
@@ -423,6 +425,8 @@ void QQuickPathView::pathUpdated()
 
 void QQuickPathViewPrivate::updateItem(QQuickItem *item, qreal percent)
 {
+    if (!path)
+        return;
     if (QQuickPathViewAttached *att = attached(item)) {
         if (qFuzzyCompare(att->m_percent, percent))
             return;
diff --git a/tests/auto/quick/qquickpathview/data/emptypath.qml b/tests/auto/quick/qquickpathview/data/emptypath.qml
new file mode 100644
index 0000000000..d68cf4491b
--- /dev/null
+++ b/tests/auto/quick/qquickpathview/data/emptypath.qml
@@ -0,0 +1,6 @@
+import QtQuick 2.0
+
+PathView {
+    model: 1
+    delegate: Item {}
+}
diff --git a/tests/auto/quick/qquickpathview/tst_qquickpathview.cpp b/tests/auto/quick/qquickpathview/tst_qquickpathview.cpp
index a7e0f2feb4..8821203902 100644
--- a/tests/auto/quick/qquickpathview/tst_qquickpathview.cpp
+++ b/tests/auto/quick/qquickpathview/tst_qquickpathview.cpp
@@ -118,6 +118,7 @@ private slots:
     void pathUpdateOnStartChanged();
     void package();
     void emptyModel();
+    void emptyPath();
     void closed();
     void pathUpdate();
     void visualDataModel();
@@ -1373,6 +1374,19 @@ void tst_QQuickPathView::emptyModel()
     delete window;
 }
 
+void tst_QQuickPathView::emptyPath()
+{
+    QQuickView *window = createView();
+
+    window->setSource(testFileUrl("emptypath.qml"));
+    qApp->processEvents();
+
+    QQuickPathView *pathview = qobject_cast<QQuickPathView*>(window->rootObject());
+    QVERIFY(pathview != 0);
+
+    delete window;
+}
+
 void tst_QQuickPathView::closed()
 {
     QQmlEngine engine;