https://gcc.gnu.org/bugzilla/show_bug.cgi?id=97945
Jakub Jelinek <jakub at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Resolution|--- |INVALID Status|UNCONFIRMED |RESOLVED Component|ipa |c CC| |jakub at gcc dot gnu.org --- Comment #1 from Jakub Jelinek <jakub at gcc dot gnu.org> --- That is a user error. The C99 and later standards mandate this behavior. Either use static inline, or in one TU you need to use extern inline, or use the GNU inline semantics.