[Boost-bugs] [Boost C++ Libraries] #9731: io_service::~io_service does not desrtoy asio::spawn-ed coroutine (MSVC only)

Subject: [Boost-bugs] [Boost C++ Libraries] #9731: io_service::~io_service does not desrtoy asio::spawn-ed coroutine (MSVC only)
From: Boost C++ Libraries (noreply_at_[hidden])
Date: 2014-03-03 11:12:46

#9731: io_service::~io_service does not desrtoy asio::spawn-ed coroutine (MSVC
only)
------------------------------+----------------------------
 Reporter:  anonymous         |      Owner:  chris_kohlhoff
     Type:  Bugs              |     Status:  new
Milestone:  To Be Determined  |  Component:  asio
  Version:  Boost 1.55.0      |   Severity:  Problem
 Keywords:                    |
------------------------------+----------------------------
 Hello!

 There is a bug in MSVC - it doesn't generate implicit move constructor for
 boost::asio::detail::coro_handler and spawn_helper (see
 asio/impl/spawn.hpp). Because of that, pull part of coroutine gets
 strongly referenced by coroutine itself and could not be destroyed during
 ~io_service execution.

 Please consider an example in attachment. It should print:

 Entering coroutine \\
 Exiting coroutine

 When compiled with MSVC, it doesn't print 2nd line.

 Adding move construtors to coro_handler (in both specializations) and to
 spawn_helper will fix this issue.

 P.S. this issue depends on https://svn.boost.org/trac/boost/ticket/9442

-- 
Ticket URL: <https://svn.boost.org/trac/boost/ticket/9731>
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