Hi,

There is a severe bug in packaged_task constructor when compiling in C++11 mode and giving a copyable functor as parameter, as reported in https://svn.boost.org/trac/boost/ticket/8596. I believe that this is not a regression, this have never worked.

Until I find a fix, the packaged_task could be used only with free functions and with movable functors when compiling in C++11 mode.