http://gcc.gnu.org/bugzilla/show_bug.cgi?id=25466
--- Comment #8 from Daniel Krügler <daniel.kruegler at googlemail dot com> 2012-11-01 07:11:56 UTC --- (In reply to comment #7) The error is real. The original example belongs to 5.2.8 p2: "When typeid is applied to a **glvalue expression** whose type is a polymorphic class type [..] " which is the rule requiring dynamic evaluation of the expression. Your counter example is an expression that is an rvalue expression, which belongs to p3: "When typeid is applied to an expression other than a glvalue of a polymorphic class type, the result refers to a std::type_info object representing the static type of the expression. [..] The expression is an unevaluated operand (Clause 5)."
