[Bug libstdc++/49668] [C++0x] std::thread does not forward its args as rvalues

[redi at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49668

Jonathan Wakely <redi at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Target Milestone|---                         |4.7.0

--- Comment #2 from Jonathan Wakely <redi at gcc dot gnu.org> 2011-07-07 11:02:01 UTC ---
Same problem for call_once too, basically everywhere that uses
 INVOKE( DECAY_COPY ( std::forward<Callable>(func)),
         DECAY_COPY (std::forward<Args>(args))...)

I'm going to split out the tuple<decay<F>::type, decay<Args>::type...> from
thread::_Impl so it can be reused in <future> and <mutex>, as a really simple
one-time use version of _Bind_result that doesn't support is_placeholder or
is_bind_expression and forwards everything as rvalues, implementing the INVOKE
expression above