http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54506
--- Comment #7 from Jason Merrill <jason at gcc dot gnu.org> 2012-09-10 02:09:26 UTC --- (In reply to comment #3) > g++ v4.7.2 20120908 (prerelease) compiles the original example successfully, > but it fails to compile the following code: G++ is following the proposed resolution of DR 1402 here; A<int> does not have a move constructor and it is not trivially copyable, so the B move constructor is not implicitly declared. This seems like a flaw in the 1402 drafting; the template constructor should count.
