Re: [Boost-bugs] [Boost C++ Libraries] #4577: invoke() uses invalid boost::result_of<>

Subject: Re: [Boost-bugs] [Boost C++ Libraries] #4577: invoke() uses invalid boost::result_of<>
From: Boost C++ Libraries (noreply_at_[hidden])
Date: 2015-01-05 14:57:39

#4577: invoke() uses invalid boost::result_of<>
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  Reporter:  anonymous                |      Owner:  t_schwinger
      Type:  Bugs                     |     Status:  new
 Milestone:  To Be Determined         |  Component:  fusion
   Version:  Boost Development Trunk  |   Severity:  Problem
Resolution:                           |   Keywords:
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Comment (by Kohei Takahashi <flast@…>):

 I think that original behaviour is eligible in such situation.

 In (1), as you know, `vec[n]` is `const lvalue reference` of `int` since
 `vec` is `const lvalue` of `vector`.
 However, in (2), the function `t` returns `prvalue` of `int`: means type
 of `f(vec[n])` is '''just''' `int`.

 So, I'm against the suggestion.

-- 
Ticket URL: <https://svn.boost.org/trac/boost/ticket/4577#comment:2>
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