[Bug c++/68585] [5/6 Regression] c++14 code accepted by 4.9 not accepted by 5 and 6

[redi at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68585

Jonathan Wakely <redi at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Keywords|                            |rejects-valid
             Status|UNCONFIRMED                 |NEW
   Last reconfirmed|                            |2015-12-01
     Ever confirmed|0                           |1

--- Comment #1 from Jonathan Wakely <redi at gcc dot gnu.org> ---
The code looks valid to me. Preprocessing with 4.9.3 and compiling with trunk
fails, so it's a front-end regression (not something in the library).

I'll try to reduce it.