[Bug preprocessor/61613] ,##__VA_ARGS__ fails to expand the first variadic argument if it is a macro-name

[arthur.j.odwyer at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61613

--- Comment #1 from Arthur O'Dwyer <arthur.j.odwyer at gmail dot com> ---
Already filed against Clang: http://llvm.org/bugs/show_bug.cgi?id=19141