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From: "jason at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c++/57979] G++ accepts constant expression defined using floating point non-constexpr glvalue
Date: Thu, 20 Nov 2014 03:43:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=57979

Jason Merrill <jason at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
         Resolution|---                         |FIXED
           Assignee|unassigned at gcc dot gnu.org      |jason at gcc dot gnu.org
   Target Milestone|---                         |5.0

--- Comment #8 from Jason Merrill <jason at gcc dot gnu.org> ---
(In reply to Ville Voutilainen from comment #5)
> I think this should be put on hold, since EWG told CWG in Rapperswil
> that const floats should perform the same magic as const ints do, see
> http://open-std.org/JTC1/SC22/WG21/docs/cwg_closed.html#1826
> which EWG suggested CWG to reopen and resolve.

I had already done most of the work before you made this comment.  :)

You might want to ping Mike about that again, as I don't think it came up in
core at the Urbana meeting.

Fixed for gcc 5.