Boost C++ Libraries: Ticket #5811: indirected range adaptor not satisfied with unary dereference operator

Tue, 30 Aug 2011 15:35:42 GMT

This was apparently known back in May in a question on Stack Overflow, which also mentions a workaround for Boost.Optional. It doesn't address the underlying doc bug though, so the ticket is still valid.

#include <boost/optional/optional_fwd.hpp>
#include <boost/pointee.hpp>
namespace boost
{
    template<typename P>
    struct pointee<optional<P> >
    {
        typedef typename optional<P>::value_type type;
    };
}

Tue, 30 Aug 2011 15:59:01 GMT

I found this related topic on stackoverflow:

http://stackoverflow.com/questions/6123327/use-boostoptional-together-with-boostadaptorsindirected

The first answer solved the problem for me, i don't know if it's safe though.

Regards, Júlio.

status changed; resolution set

Neil Groves — Sat, 22 Feb 2014 16:18:33 GMT

status new → closed
resolution → fixed

Added a unit test to confirm that a fix has been made to Boost.Optional and that the use-case now works as expected when using optional with the indirected adapter.

status changed; resolution deleted

rob.desbois@… — Tue, 24 Oct 2017 11:58:04 GMT

status closed → reopened
resolution fixed

This doesn't appear to be fixed; I've tried the testcase using the latest Boost (1.65.1) with both clang 4.01 and gcc 6.4.1, but still get the compilation failure:

boost_1_65_1/boost/pointee.hpp:30:27: error: no type named 'element_type' in 'boost::optional<int>'