Mainline issues the following diagnostic for the code from g++.dg/inherit/using4.C:
================================ struct B { void f(); }; struct D : B { using B::f; using B::f; // { dg-error "repeated" } }; ================================ using4.C:7: error: repeated using declaration 'using#'function_decl' not supported by dump_type#<type error>::f' On the 4.0 branch we have the correct diagnostic: using4.C:7: error: repeated using declaration 'using B::f' -- Summary: [4.1 regression] Error message regression with g++.dg/inherit/using4.C Product: gcc Version: 4.1.0 Status: UNCONFIRMED Keywords: diagnostic Severity: normal Priority: P2 Component: c++ AssignedTo: unassigned at gcc dot gnu dot org ReportedBy: reichelt at gcc dot gnu dot org CC: gcc-bugs at gcc dot gnu dot org http://gcc.gnu.org/bugzilla/show_bug.cgi?id=23725