Re: [Boost-bugs] [Boost C++ Libraries] #9211: fstream types don't have move semantics

Subject: Re: [Boost-bugs] [Boost C++ Libraries] #9211: fstream types don't have move semantics
From: Boost C++ Libraries (noreply_at_[hidden])
Date: 2014-03-24 09:36:46

#9211: fstream types don't have move semantics
-------------------------------+---------------------------------
  Reporter:  anonymous         |      Owner:  bemandawes
      Type:  Feature Requests  |     Status:  new
 Milestone:  To Be Determined  |  Component:  filesystem
   Version:  Boost 1.54.0      |   Severity:  Problem
Resolution:                    |   Keywords:  fstream rvalue move
-------------------------------+---------------------------------

Comment (by anonymous):

 Here is a use case:

 {{{
 template <typename Stream, typename... Args>
 Stream StreamOpen(Args&&... args) {
         Stream stream;
         stream.exceptions(ios::failbit | ios::badbit);
         stream.open(forward<Args>(args)...);
         return stream;
 }
 }}}
 {{{
 auto f1 = StreamOpen<std::ifstream>("filename", std::ios::binary); //
 succeeds
 auto f2 = StreamOpen<boost::filesystem::ifstream>("filename",
 std::ios::binary); // fails
 }}}

-- 
Ticket URL: <https://svn.boost.org/trac/boost/ticket/9211#comment:3>
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