[Bug libstdc++/97869] defines __cpp_lib_span even when doesn't provide an implementation

[redi at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=97869

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Target Milestone|---                         |10.3
             Status|UNCONFIRMED                 |NEW
   Last reconfirmed|                            |2020-11-17
     Ever confirmed|0                           |1