Re: [Boost-bugs] [Boost C++ Libraries] #4189: Add better support for non-default constructible function objects

Subject: Re: [Boost-bugs] [Boost C++ Libraries] #4189: Add better support for non-default constructible function objects
From: Boost C++ Libraries (noreply_at_[hidden])
Date: 2013-08-21 22:54:24

#4189: Add better support for non-default constructible function objects
-------------------------------+--------------------------------
  Reporter:  djwalker          |      Owner:  jeffrey.hellrung
      Type:  Feature Requests  |     Status:  new
 Milestone:  Boost 1.43.0      |  Component:  iterator
   Version:  Boost 1.42.0      |   Severity:  Problem
Resolution:                    |   Keywords:  transform_iterator
-------------------------------+--------------------------------

Comment (by olivier-m.pena@…):

 Same problem than Taras here : transform_iterator assigned to an any_range
 with gcc 4.8.1. Even without closure.

 If not assigned to an any_range, it's ok.


 {{{
 typedef boost::any_range<int, boost::forward_traversal_tag, int,
 std::ptrdiff_t> int_range;
 std::vector<int> v;

 // Fail.
 int_range range1 = v | boost::adaptors::transformed(
    [](const int& i) {return i * 2; });

 // Ok.
 int_range range2 = v | boost::adaptors::transformed(
    std::function<int(const int&)>(
    [](const int& i) {return i * 2; }));

 }}}

 I would like to add that clang 3.3 compiles successfully.

-- 
Ticket URL: <https://svn.boost.org/trac/boost/ticket/4189#comment:5>
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