[Bug libstdc++/83025] [8 Regression] xfstream::open with char* gets caught on C++17 path overload.

[redi at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83025

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |ASSIGNED
      Known to work|                            |7.2.0
           Keywords|                            |rejects-valid
   Last reconfirmed|                            |2017-11-17
           Assignee|unassigned at gcc dot gnu.org      |redi at gcc dot gnu.org
     Ever confirmed|0                           |1
            Summary|xfstream::open with char*   |[8 Regression]
                   |gets caught on C++17 path   |xfstream::open with char*
                   |overload.                   |gets caught on C++17 path
                   |                            |overload.
   Target Milestone|---                         |8.0

--- Comment #2 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Oops. Even with the patch the new overload will be used for std::string
arguments, which works but isn't right.

I'll constrain it further to only match path-like things.