[Bug libstdc++/79433] __has_include() is true but #include gives #error when -std=old

[redi at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=79433

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |ASSIGNED
           Assignee|unassigned at gcc dot gnu.org      |redi at gcc dot gnu.org

--- Comment #24 from Jonathan Wakely <redi at gcc dot gnu.org> ---
The study group has approved the idea in comment 23 so I'm making that change
(on trunk only so far).