[Bug preprocessor/84864] Issues with large line numbers >= 2^31

[dmalcolm at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84864

--- Comment #1 from David Malcolm <dmalcolm at gcc dot gnu.org> ---
Note to self:
 
/home/david/coding-3/gcc-git-bugfixing/src/backup-patches/linenum_type-throughout.patch