Re: [Boost-bugs] [Boost C++ Libraries] #11875: Boost.Phoenix should not forward-declare std::unordered_set / map

Subject: Re: [Boost-bugs] [Boost C++ Libraries] #11875: Boost.Phoenix should not forward-declare std::unordered_set / map
From: Boost C++ Libraries (noreply_at_[hidden])
Date: 2017-05-19 19:05:56

#11875: Boost.Phoenix should not forward-declare std::unordered_set / map
-------------------------------------------------+-------------------------
  Reporter:  Jean-Michaël Celerier               |      Owner:  theller
  <jeanmichael.celerier@…>                       |
      Type:  Bugs                                |     Status:  reopened
 Milestone:  Boost 1.65.0                        |  Component:  phoenix
   Version:  Boost 1.64.0                        |   Severity:  Problem
Resolution:                                      |   Keywords:
-------------------------------------------------+-------------------------
Changes (by rogeeff@…):

 * status:  closed => reopened
 * version:  Boost 1.60.0 => Boost 1.64.0
 * resolution:  fixed =>
 * milestone:  Boost 1.62.0 => Boost 1.65.0

Comment:

 This is still wrong. There is no legal way to forward declare
 std::unordered_set/std::unordered_map. According to the standard
 ([namespace.std]), these forward declarations have undefined behavior.

 This need to change to
  #include <unordered_map>
  #include <unordered_set>

-- 
Ticket URL: <https://svn.boost.org/trac/boost/ticket/11875#comment:4>
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