[Bug web/109355] Add a text warning to old gcc online manual stating it is out of date

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=109355

--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
There is another bug about adding a version to the manual pages. Thar would be
better. Touching old generated html files is not a good solution. Plus the
version is in the url.