[Bug preprocessor/89380] Multiple items in brace not working on nested macro

[pinskia at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89380

--- Comment #2 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
https://stuff.mit.edu/afs/athena/project/rhel-doc/3/rhel-cpp-en-3/macro-pitfalls.html