More robust tracking of signal handler expression ownership.

Reference count the expressions, and improve testing.

Change-Id: I810509eae1c7608b367e9ff5f7891a294667a692
Reviewed-by: Chris Adams <christopher.adams@nokia.com>

1 files changed, 1 insertions, 1 deletions

diff --git a/src/qml/debugger/qqmlenginedebugservice.cpp b/src/qml/debugger/qqmlenginedebugservice.cpp
index f837da578f..b095e8f9bb 100644
--- a/src/qml/debugger/qqmlenginedebugservice.cpp
+++ b/src/qml/debugger/qqmlenginedebugservice.cpp
@@ -580,7 +580,7 @@ bool QQmlEngineDebugService::setBinding(int objectId,
                 } else if (hasValidSignal(object, propertyName)) {
                     QQmlBoundSignalExpression *qmlExpression = new QQmlBoundSignalExpression(QQmlContextData::get(context), object, expression.toString(),
                                                                                              false, filename, line, column);
-                    QQmlPropertyPrivate::setSignalExpression(property, qmlExpression);
+                    QQmlPropertyPrivate::takeSignalExpression(property, qmlExpression);
                 } else if (property.isProperty()) {
                     QQmlBinding *binding = new QQmlBinding(expression.toString(), false, object, QQmlContextData::get(context), filename, line, column);;
                     binding->setTarget(property);