Binding should warn if target's property doesn't exist,or there is no WRITE method in the property.

Say puppy is a C++ object which has a property called name. If puppy is mispelled, QML will output: ReferenceError: puppu is not defined.

Binding { target:puppu; property:"name"; value:input.text }

But if name is mispelled, QML never outputs any warning or error.

Binding { target:puppy; property:"namw"; value:input.text }

There is no warning too, if WRITE method is not defined in the Q_PROPERTY declaration of name.

My suggestion is to output warnings to help debugging.