[Bug preprocessor/52998] different macro unwinder for C and C++ (-ftrack-macro-expansion)

[pinskia at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=52998

--- Comment #6 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
C++ and C match up in GCC 6+.