Evaluation of constructor arguments if there's no constructor

Hi internals, I was sifting through the bucket o’ bugs and found these two related issues: https://bugs.php.net/bug.php?id=67829 https://bugs.php.net/bug.php?id=54162 (closed) They concern the behaviour of the engine when a class defines no constructor or if the class to be instantiated doesn’t exist, which can be seen here: http://3v4l.org/jOQY0 This is obviously a design decision, but doesn’t seem to have a mention in the documentation nor the spec (I couldn’t find it under the ‘new’ operator). I can add a paragraph in the documentation for it; the question is whether it should also be added to the spec, seeing how HHVM and PHP behave differently in this respect? It could be added as implementation dependent behaviour I suppose? — @datibbaw