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From: shankar@hpclscu.HP.COM (Shankar Unni)
Newsgroups: comp.lang.c++
Subject: Re: Multiple inheritance with virtual bases
Message-ID: <58170035@hpclscu.HP.COM>
Date: 26 Oct 90 05:06:56 GMT
References: <HAGIWARA.90Oct18105013@rd14.zuken.co.jp>
Organization: Hewlett-Packard Calif. Language Lab
Lines: 18

> IMHO: the 2K size is a bug.
> E&S's ARM, 10.1: "
> 
>       class V { /* ... */ };
>       class A : virtual public V { /* ... */ };
>       class B : virtual public V { /* ... */ };
>       class C : public A, public B { /* ... */ };
> 
>    Here class C has only one sub-object of class V. "

Yes, and if you feed this case to cfront, it gives the "right" answer
(1020).

It's when C derives from a virtual A and a virtual B that things get
interesting. I think it's a cfront bug, too.
-----
Shankar Unni.
HP Calif. Language Lab.