[Bug preprocessor/82176] Feature request: replace __FILE__ with file's basename instead its full name

[f.hollerer at gmx dot net]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=82176

--- Comment #2 from f.hollerer at gmx dot net ---
> See PR 42579 which has a patch to add __FILE_BASENAME__ for this purpose.

Unfortunately this does not solve the problem when __FILE__ is used indirectly
via the assert() macro shipped with the compiler toolchain.