[Bug c++/87407] Enhance -Wunused-function to handle also inline functions

[marxin at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=87407

--- Comment #3 from Martin Liška <marxin at gcc dot gnu.org> ---
Andrew I don't get it. Can you please explain why it does not make sense to
warn e.g. about function that are declared in a .c file (not header file)?