In C++, if throw is an expression, what is its type?

Question

I picked this up in one of my brief forays to reddit:

http://www.smallshire.org.uk/sufficientlysmall/2009/07/31/in-c-throw-is-an-expression/

Basically, the a

Answer 1

"A throw-expression is of type void"

ISO14882 Section 15