Std-discussion: Re: More Than One Final Overrider Of A Virtual Functions.

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C++ Logo std-discussion Search Advanced search From: Ville Voutilainen <ville.voutilainen_at_[hidden]> Date: Tue, 17 Aug 2021 21:29:52 +0300 On Tue, 17 Aug 2021 at 21:19, Vladimir Grigoriev <vlad.moscow_at_[hidden]> wrote: > > Well, If to change the declarations the following way > > struct A { virtual void f(); }; > struct B : virtual A { }; > struct C : virtual A { void f(); }; > struct D : B, C { }; // OK: A::f and C::f are the final overriders > // for the B and C subobjects, respectively > > when in this case will the code snippet be ill-formed? No, because now there's only one final overrider, in C. But you're on the right track; this is ill-formed: struct A { virtual void f() {} }; struct B : virtual A { void f() {}}; struct C : virtual A { void f() {} }; struct D : B, C { }; // error: no unique final overrider for 'virtual void A::f()' in 'D'

Received on 2021-08-17 13:30:09

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