Re: [Boost-bugs] [Boost C++ Libraries] #12110: boost::signals2 with reference to boost::any crashes on vc2015 update2

Subject: Re: [Boost-bugs] [Boost C++ Libraries] #12110: boost::signals2 with reference to boost::any crashes on vc2015 update2
From: Boost C++ Libraries (noreply_at_[hidden])
Date: 2016-04-19 06:40:12

#12110: boost::signals2 with reference to boost::any crashes on vc2015 update2
-------------------------------+----------------------
  Reporter:  tschenser@…       |      Owner:  fmhess
      Type:  Bugs              |     Status:  new
 Milestone:  To Be Determined  |  Component:  signals2
   Version:  Boost 1.60.0      |   Severity:  Problem
Resolution:                    |   Keywords:
-------------------------------+----------------------

Comment (by tschenser@…):

 Microsoft states in their release notes
 [https://blogs.msdn.microsoft.com/vcblog/2016/04/14/stl-fixes-in-

 vs-2015-update-2/] that :

 "Now, tuple implements the C++17 rules (as modified by LWG 2549, which is
 necessary), to the best of my knowledge and ability. Note that these rules
 are a breaking change for 1-tuples, where you have a tuple<UDT> and UDT
 has an unconstrained templated constructor."

 which seems the case here and

 "As mentioned above, constructing tuple<UDT> from tuple<Other> when UDT
 has an (undesirably) unconstrained templated constructor, was broken by
 N4387 and LWG 2549. '''Fix: Properly constrain UDT’s templated
 constructor.'''"

-- 
Ticket URL: <https://svn.boost.org/trac/boost/ticket/12110#comment:4>
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