Fix possible crash when overriding a signal handler.

2 files changed, 3 insertions, 3 deletions

diff --git a/src/declarative/qml/qmlboundsignal.cpp b/src/declarative/qml/qmlboundsignal.cpp
index def11c3..deb15dc 100644
--- a/src/declarative/qml/qmlboundsignal.cpp
+++ b/src/declarative/qml/qmlboundsignal.cpp
@@ -177,7 +177,7 @@ int QmlBoundSignal::qt_metacall(QMetaObject::Call c, int id, void **a)
         if (m_params) m_params->setValues(a);
         if (m_expression) {
             QmlExpressionPrivate::get(m_expression)->value(m_params);
-            if (m_expression->hasError())
+            if (m_expression && m_expression->hasError())
                 qWarning().nospace() << qPrintable(m_expression->error().toString());
         }
         if (m_params) m_params->clearValues();
diff --git a/src/declarative/util/qmlpropertychanges.cpp b/src/declarative/util/qmlpropertychanges.cpp
index 3cc6ca9..3aa3678 100644
--- a/src/declarative/util/qmlpropertychanges.cpp
+++ b/src/declarative/util/qmlpropertychanges.cpp
@@ -232,7 +232,7 @@ void QmlPropertyChangesPrivate::decode()
         ds >> data;
 
         QmlMetaProperty prop = property(name);      //### better way to check for signal property?
-        if (prop.type() == QmlMetaProperty::SignalProperty) {
+        if (prop.type() & QmlMetaProperty::SignalProperty) {
             QmlExpression *expression = new QmlExpression(qmlContext(q), data.toString(), object);
             expression->setTrackChange(false);
             QmlReplaceSignalHandler *handler = new QmlReplaceSignalHandler;
@@ -307,7 +307,7 @@ QmlPropertyChangesPrivate::property(const QByteArray &property)
     if (!prop.isValid()) {
         qmlInfo(QmlPropertyChanges::tr("Cannot assign to non-existant property \"%1\"").arg(QString::fromUtf8(property)), q);
         return QmlMetaProperty();
-    } else if (prop.type() != QmlMetaProperty::SignalProperty && !prop.isWritable()) {
+    } else if (!(prop.type() & QmlMetaProperty::SignalProperty) && !prop.isWritable()) {
         qmlInfo(QmlPropertyChanges::tr("Cannot assign to read-only property \"%1\"").arg(QString::fromUtf8(property)), q);
         return QmlMetaProperty();
     }