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

[redi at gcc dot gnu.org]

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

Jonathan Wakely <redi at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|RESOLVED                    |NEW
   Last reconfirmed|                            |2018-09-24
         Resolution|INVALID                     |---
     Ever confirmed|0                           |1

--- Comment #6 from Jonathan Wakely <redi at gcc dot gnu.org> ---
I think for C++ (which is the component this bug was created for, even if
comment 0 only has C examples) it makes sense to warn even for static inline
functions in headers ... why would you want to define them in headers?

In C++ they should probably just be inline, not static inline.

Even if we don't want the warning for headers, it does make sense for functions
defined in .C files.