[Bug libstdc++/63329] std::bind does not define argument_type

[redi at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63329

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |RESOLVED
         Resolution|---                         |INVALID

--- Comment #2 from Jonathan Wakely <redi at gcc dot gnu.org> ---
The standard does not require the typedef to be defined (libc++ apparently does
it as an extension)

See http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2014/n4076.html for a
generic replacement for std::not1 that is proposed for a future standard.