Re: [boost] [any] last commit breaks program_options

Hi Antony, On Monday, 15. April 2013 13:19:26 Antony Polukhin wrote:

2013/4/15 Jürgen Hunold :

...

Hi!

It seems that introducing move semantics to Boot.Any in r 83901 breaks compilation of program_options.

/home/hunold/src/devel/boost/boost/program_options/variables_map.hpp:58:38 : note: no known conversion for argument 1 from ‘boost::program_options::variable_value’ to ‘boost::program_options::variable_value&’

Full build log attached.

Any Ideas?

This looks like Boost.Move known limitation: http://www.boost.org/doc/libs/1_53_0/doc/html/move/emulation_limitations.htm l#move.emulation_limitations.assignment_operator

Thanks. Clang had a better diagnostic, so I figured out I had to implement operator= (patch attached) to get this working.

I'm afraid that this will confuse a lot of people who use Boost.Any... May be it would be better to disable ravlue emulation and use rvalues only in C++11?

I'm only using ProgramOptions at the moment. And not following the move discussion for pre-c++11 not closely enough to comment on this. C++11 only support for be enough for me. My 0.02€. Yours, Jürgen -- * Dipl.-Math. Jürgen Hunold ! * voice: ++49 4257 300 ! Fährstraße 1 * fax : ++49 4257 300 ! 31609 Balge/Sebbenhausen * jhunold@gmx.eu ! Germany