FolderListModel emitted incorrect rowsRemoved range causing crash.

beginRemoveRows() takes the first and last index as parameters, but
it was passing count rather than count-1 as the last index.

Change-Id: I81a6fbf085acacf5f8c1ca847b0bdc826bcf405b
Task-number: QTBUG-17775
Reviewed-by: Bea Lam

2 files changed, 31 insertions, 2 deletions

diff --git a/src/imports/folderlistmodel/qdeclarativefolderlistmodel.cpp b/src/imports/folderlistmodel/qdeclarativefolderlistmodel.cpp
index d5726c1..9fe01bf 100644
--- a/src/imports/folderlistmodel/qdeclarativefolderlistmodel.cpp
+++ b/src/imports/folderlistmodel/qdeclarativefolderlistmodel.cpp
@@ -365,7 +365,7 @@ void QDeclarativeFolderListModel::refresh()
 {
     d->folderIndex = QModelIndex();
     if (d->count) {
-        emit beginRemoveRows(QModelIndex(), 0, d->count);
+        emit beginRemoveRows(QModelIndex(), 0, d->count-1);
         d->count = 0;
         emit endRemoveRows();
     }
diff --git a/tests/auto/declarative/qdeclarativefolderlistmodel/tst_qdeclarativefolderlistmodel.cpp b/tests/auto/declarative/qdeclarativefolderlistmodel/tst_qdeclarativefolderlistmodel.cpp
index a62ea31..6028333 100644
--- a/tests/auto/declarative/qdeclarativefolderlistmodel/tst_qdeclarativefolderlistmodel.cpp
+++ b/tests/auto/declarative/qdeclarativefolderlistmodel/tst_qdeclarativefolderlistmodel.cpp
@@ -62,14 +62,24 @@ class tst_qdeclarativefolderlistmodel : public QObject
 {
     Q_OBJECT
 public:
-    tst_qdeclarativefolderlistmodel() {}
+    tst_qdeclarativefolderlistmodel() : removeStart(0), removeEnd(0) {}
+
+public slots:
+    void removed(const QModelIndex &, int start, int end) {
+        removeStart = start;
+        removeEnd = end;
+    }
 
 private slots:
     void basicProperties();
+    void refresh();
 
 private:
     void checkNoErrors(const QDeclarativeComponent& component);
     QDeclarativeEngine engine;
+
+    int removeStart;
+    int removeEnd;
 };
 
 void tst_qdeclarativefolderlistmodel::checkNoErrors(const QDeclarativeComponent& component)
@@ -115,6 +125,25 @@ void tst_qdeclarativefolderlistmodel::basicProperties()
     QCOMPARE(flm->property("folder").toUrl(), QUrl::fromLocalFile(""));
 }
 
+void tst_qdeclarativefolderlistmodel::refresh()
+{
+    QDeclarativeComponent component(&engine, QUrl::fromLocalFile(SRCDIR "/data/basic.qml"));
+    checkNoErrors(component);
+
+    QAbstractListModel *flm = qobject_cast<QAbstractListModel*>(component.create());
+    QVERIFY(flm != 0);
+
+    int count = flm->rowCount();
+
+    connect(flm, SIGNAL(rowsRemoved(const QModelIndex&,int,int)),
+            this, SLOT(removed(const QModelIndex&,int,int)));
+
+    flm->setProperty("sortReversed", true);
+
+    QCOMPARE(removeStart, 0);
+    QCOMPARE(removeEnd, count-1);
+}
+
 QTEST_MAIN(tst_qdeclarativefolderlistmodel)
 
 #include "tst_qdeclarativefolderlistmodel.moc"