This bug is solved in the C front-end (bug 4076). The original patch also addressed the C++ front-end http://gcc.gnu.org/ml/gcc-patches/2007-03/msg00171.html However, some issues were raised about functions in anonymous namespaces: http://gcc.gnu.org/ml/gcc-patches/2007-03/msg01103.html
-- Summary: -Wunused doesn't warn about static function only called by itself. Product: gcc Version: unknown Status: UNCONFIRMED Keywords: diagnostic Severity: normal Priority: P3 Component: c++ AssignedTo: unassigned at gcc dot gnu dot org ReportedBy: manu at gcc dot gnu dot org http://gcc.gnu.org/bugzilla/show_bug.cgi?id=32562