Re: [boost] [config] Changes needed for VC++ 2015 Update 3?

Subject: Re: [boost] [config] Changes needed for VC++ 2015 Update 3?
From: Paul Fultz II (pfultz2_at_[hidden])
Date: 2016-06-08 23:10:52

> On Jun 8, 2016, at 1:33 PM, Peter Dimov <lists_at_[hidden]> wrote:
> 
> John Maddock wrote:
> 
>> If it's predominantly a single library issue, then a BOOST_WORKAROUND should do it?  But yes we should definitely enable the new features.
> 
> We already have BOOST_CONSTEXPR_OR_CONST and BOOST_STATIC_CONSTEXPR which are supposed to be used in these cases (statically initializing variables) - as opposed to BOOST_CONSTEXPR which covers the other constexpr meaning (functions evaluated at compile time).
> 
> Although things are probably made worse by the fact that MSVC does initialize statically literal types, just not non-literals with a user-defined constexpr constructor (if I'm not mistaken). 

If it has a constexpr constructor then it is a literal type unless it has a non-trivial destructor. However, I don’t think clang nor gcc will statically initialize a type with a non-trivial destructor either(even with a constexpr constructor).