[Bug c++/54606] reference assignment failing/points at previous object

[pinskia at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54606

--- Comment #2 from Andrew Pinski <pinskia at gcc dot gnu.org> 2012-09-22 19:46:36 UTC ---
(In reply to comment #1)
> References cannot be assigned in C++, your code just triggers undefined
> behavior.

More to the point it is not undefined behavior but rather:
a = Y;
invokes the Dummy::operator= .