[Bug c/91973] gcc failed for Multiple level macro expansion

[jsm28 at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=91973

Joseph S. Myers <jsm28 at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |RESOLVED
         Resolution|---                         |INVALID

--- Comment #1 from Joseph S. Myers <jsm28 at gcc dot gnu.org> ---
This is not a bug in GCC, it's how the preprocessor is defined to work.