http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52597
--- Comment #2 from Hubert Tong <hstong at ca dot ibm.com> 2012-03-28 23:51:37 UTC --- The message from 4.7.0 does not really make sense, although it probably does fix the functional issues associated with the reported bug in contexts where SFINAE applies.
