---------- Forwarded message ---------- From: Andrey Semashev <andrey.semashev@gmail.com> Date: 2015-05-27 16:06 GMT+02:00 Subject: Re: [boost] [typeof] Weird VC++ compiler bug To: "boost@lists.boost.org" <boost@lists.boost.org> On Wed, May 27, 2015 at 4:53 PM, Andrzej Krzemienski <akrzemi1@gmail.com> wrote:
2015-05-23 18:33 GMT+02:00 Steven Watanabe <watanabesj@gmail.com>:
AMDG
On 05/23/2015 09:44 AM, Peter Dimov wrote:
Why doesn't Typeof use decltype on VS 2013?
Probably because Typeof hasn't had a maintainer since before decltype. It doesn't appear to use decltype for any compiler.
I don't think it can. The semantics of BOOST_TYPEOF is that of: auto x = expr;
The semantics of decltype are quire different. For instance, auto and BOOST_TYPEOF and GCC's __typeof__ never deduce references -- always values. decltype on the other hand can deduce references.
As long as BOOST_TYPEOF is less precise than decltype it can be emulated, can it not? You're right it can. I think the following would work: typename std::decay<decltype(expr)>::type Regards, &rzej