[Boost-bugs] [Boost C++ Libraries] #5811: indirected range adaptor not satisfied with unary dereference operator

Subject: [Boost-bugs] [Boost C++ Libraries] #5811: indirected range adaptor not satisfied with unary dereference operator
From: Boost C++ Libraries (noreply_at_[hidden])
Date: 2011-08-25 19:17:26

#5811: indirected range adaptor not satisfied with unary dereference operator
------------------------------------------------------------+---------------
 Reporter:  Lars Viklund <zao@…>                            |       Owner:  neilgroves
     Type:  Bugs                                            |      Status:  new       
Milestone:  To Be Determined                                |   Component:  range     
  Version:  Boost Development Trunk                         |    Severity:  Problem   
 Keywords:  optional element_type range adaptor indirected  |  
------------------------------------------------------------+---------------
 The documentation for Range's indirected adaptor claims that it is usable
 with anything that has an unary operator*().

 When using it with a range of optional<int>, it seems to require an
 element_type inner type, which optional doesn't expose and the docs does
 not require.

 The following testcase fails to compile with VC10 and GCC 4.2.3:

 {{{#!c++
 #include <boost/optional.hpp>
 #include <boost/range/adaptors.hpp>
 #include <vector>

 int main(int argc, char* argv[])
 {
         std::vector<boost::optional<int> > v;
         v | boost::adaptors::indirected;
 }
 }}}

-- 
Ticket URL: <https://svn.boost.org/trac/boost/ticket/5811>
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