[Bug preprocessor/33877] Request for __VA_ARGC__

[foss+gcc--- via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=33877

--- Comment #5 from Alejandro Colomar <foss+...@alejandro-colomar.es> ---
gnulib uses a macro to get this value, so this is something real that projects
are using.  I know other projects also use it.