Correctly set this object when calling scope/context functions5.6

When a function is called that is in a QML scope or a QML context, set
the 'this' object to the QML scope.

Note: this patch is 5.9 specific. 5.11 has a similair issue, but the
implementation is quite different, so that needs a separate fix.

Task-number: QTBUG-59357
Change-Id: Ia78e012d413c40a094e957f4020502cd055ac286
Reviewed-by: Simon Hausmann <simon.hausmann@qt.io>
(cherry picked from commit b2420780df98cb3c98553da18a5b1bc5b64e9e83)

1 files changed, 10 insertions, 0 deletions

diff --git a/tests/auto/qml/qqmllanguage/data/thisInQmlScope.qml b/tests/auto/qml/qqmllanguage/data/thisInQmlScope.qml
new file mode 100644
index 0000000000..e3c99e70e1
--- /dev/null
+++ b/tests/auto/qml/qqmllanguage/data/thisInQmlScope.qml
@@ -0,0 +1,10 @@
+import QtQml 2.2
+QtObject {
+    property int x: 42
+    property int y: 0
+    function g(){
+        y = this.x;
+    }
+    property var f: g
+    Component.onCompleted: f()
+}