1 files changed, 4 insertions, 0 deletions
diff --git a/tests/libsample/modifications.h b/tests/libsample/modifications.h
index f17261473..7d5c9123f 100644
--- a/tests/libsample/modifications.h
+++ b/tests/libsample/modifications.h
@@ -106,6 +106,10 @@ public:
     // the test implementation must expect point never to be null.
     int sumPointCoordinates(const Point* point);
 
+    // Modify the return value of a virtual method.
+    virtual double differenceOfPointCoordinates(const Point* pt, bool* ok);
+    double callDifferenceOfPointCoordinates(const Point* pt, bool* ok) { return differenceOfPointCoordinates(pt, ok); }
+
     // Sets an ObjectType in the argument and returns true.
     bool nonConversionRuleForArgumentWithDefaultValue(ObjectType** object = 0);
     ObjectType* getObject() const { return m_object; }