https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65856
--- Comment #3 from Markus Trippelsdorf <trippels at gcc dot gnu.org> ---
And BTW both clang and EDG warn for the first example:
foo.cpp:6:16: warning: 'B::f' hides overloaded virtual function
[-Woverloaded-virtual]
virtual void f() final;
^
foo.cpp:2:16: note: hidden overloaded virtual function 'A::f' declared here:
different number of parameters (1 vs 0)
virtual void f(int);
^
1 warning generated.
foo.cpp(6): warning #1125: function "A::f(int)" is hidden by "B::f" -- virtual
function override intended?
virtual void f() final;
^
