https://gcc.gnu.org/bugzilla/show_bug.cgi?id=87525
--- Comment #21 from Martin Jambor <jamborm at gcc dot gnu.org> --- After a bit more thinking, I found a better spot where to treat extern inline functions differently, I have proposed a patch in the mailing list: https://gcc.gnu.org/ml/gcc-patches/2019-02/msg02049.html