[Bug libstdc++/78830] std::prev accepts ForwardIterator-s

[redi at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78830

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
   Last reconfirmed|                            |2016-12-16
     Ever confirmed|0                           |1
           Severity|normal                      |enhancement

--- Comment #3 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Yes, we can certainly do that, and I agree it would be a good idea.

Marking as "Enhancement" then, rather than an accepts-invalid bug.