id,summary,reporter,owner,description,type,status,milestone,component,version,severity,resolution,keywords,cc
10864,Boost 1.57 + Xcode 6: function/lamba incompatibility,nat@…,No-Maintainer,"Boost 1.57 and clang 6 (from Xcode 6) reject this program:

{{{
#include <iostream>
#include <boost/lambda/lambda.hpp>
#include <boost/function.hpp>

typedef boost::function<void(std::ostream&)> Streamer;

void out(const Streamer& func)
{
    func(std::cout);
}

int main(int argc, char *argv[])
{
    out(boost::lambda::_1 << ""hi there\n"");
    return 0;
}
}}}

Errors start with:

{{{
boost/lambda/detail/lambda_traits.hpp:256:58: error: cannot form a reference to 'void'
      typename detail::IF<boost::is_function<T>::value, T&, const T>::RET
                                                         ^
}}}

This works with Boost 1.55 with clang 6.

This works with Boost 1.57 with older compilers.",Bugs,new,To Be Determined,lambda,Boost 1.57.0,Regression,,,