On Fri, Oct 28, 2016 at 1:47 PM, Jonathan Wakely <jwak...@redhat.com> wrote: > For some reason the Filesystem library says that you can construct > paths from iterators with value_type that is a possibly const encoded > character type. I don't know why we support const value_type in this > place, when normally that is bogus (even const_iterators have a > non-const value_type, and various algorithms won't compile with const > value_type).
It doesn't say that. [path.req]/1 says that "the value type shall be an encoded character type". [path.req]/2 says that the relevant overloads need not be SFINAE'd away (or equivalent) if the value_type is a const encoded character type, but doesn't actually say that they are required to work.
