Re: [Boost-bugs] [Boost C++ Libraries] #8811: Problem compiling Boost.Log tutorial

Subject: Re: [Boost-bugs] [Boost C++ Libraries] #8811: Problem compiling Boost.Log tutorial
From: Boost C++ Libraries (noreply_at_[hidden])
Date: 2013-07-20 18:56:01

#8811: Problem compiling Boost.Log tutorial
-------------------------------+---------------------
  Reporter:  lcarreon@…        |      Owner:  andysem
      Type:  Bugs              |     Status:  closed
 Milestone:  To Be Determined  |  Component:  log
   Version:  Boost 1.54.0      |   Severity:  Problem
Resolution:  wontfix           |   Keywords:
-------------------------------+---------------------
Changes (by andysem):

 * status:  new => closed
 * resolution:   => wontfix

Comment:

 I do not see how this warning could be worked around. In C++11 it is
 possible to write:


 {{{
 const message_type message = { { {} } };
 }}}

 but in C++03 mode the compiler emits error on this code. Another solution
 is:

 {{{
 const message_type message = { { tag::message() } };
 }}}

 but this is no longer a constant initialization, which technically makes
 the code that uses keywords invalid.

 And no matter what I do, I cannot get rid of these warnings:

 {{{
 ./boost/log/expressions/message.hpp:98:20: error:
 ‘boost::log::v2s_mt_posix::expressions::message’ defined but not used
 [-Werror=unused-variable]
 ./boost/log/expressions/message.hpp:108:21: error:
 ‘boost::log::v2s_mt_posix::expressions::smessage’ defined but not used
 [-Werror=unused-variable]
 ./boost/log/expressions/message.hpp:119:21: error:
 ‘boost::log::v2s_mt_posix::expressions::wmessage’ defined but not used
 [-Werror=unused-variable]
 }}}

 Bottom line: use more reasonable warning levels with your compiler or at
 least disable bogus warnings like this.

-- 
Ticket URL: <https://svn.boost.org/trac/boost/ticket/8811#comment:2>
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