http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51563
--- Comment #3 from gausszhch at gmail dot com 2011-12-15 10:21:21 UTC --- What does EDG stand for? Besides, why does dynamic_cast<D2*>(pd1) success but dynamic_cast<D1*>(pd2) fail? Here, D1 and D2 are symmetrical in the hierarchy graph. I think they can be cast to each other according to the ISO/IEC 14882:2003. It is said that " dynamic_cast<T>(v) ... if v points (refers) to a public base class sub-object of the most derived object, and the type of the most derived object has a base class, of type T, that is unambiguous and public, the result is a pointer (an lvalue referring) to the T sub-object of the most derived object. " (In reply to comment #1) > A real C++ compiler based on EDG agrees with GCC.
