https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64867
--- Comment #21 from Jonathan Wakely <redi at gcc dot gnu.org> --- No, because it doesn't have any tests. It should probably adjust: ../gcc/testsuite/g++.dg/overload/ellipsis1.C ../gcc/testsuite/g++.dg/overload/ellipsis2.C ../gcc/testsuite/g++.old-deja/g++.pt/vaarg3.C to use the new flag, and add a test that the new flag is enabled by -Wconditionally-supported
