[Bug c++/54101] Using std::declval for types without a default constructor and with a deleted copy constructor errors.

[redi at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54101

--- Comment #2 from Jonathan Wakely <redi at gcc dot gnu.org> 2012-07-27 
08:05:40 UTC ---
Yes, I was thinking the same thing, PR 53000