https://gcc.gnu.org/bugzilla/show_bug.cgi?id=87403 Bug 87403 depends on bug 100343, which changed state.
Bug 100343 Summary: add -Wundefined-inline for inline function is used but not defined https://gcc.gnu.org/bugzilla/show_bug.cgi?id=100343 What |Removed |Added ---------------------------------------------------------------------------- Status|UNCONFIRMED |RESOLVED Resolution|--- |DUPLICATE