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Re: Allowing access to object representations

From: sdkrystian <sdkrystian_at_[hidden]>
Date: Sat, 17 Aug 2019 18:40:28 -0400
Ok, look at it like this:Given this code:struct A { };struct B : A { int a; };Assuming the implementation chooses to make the base class have zero size, how exactly would the object representation of the base class appear in the derived class?Sent from my Samsung Galaxy smartphone.
-------- Original message --------From: Language Lawyer via Std-Proposals <std-proposals_at_[hidden]> Date: 8/17/19 16:39 (GMT-05:00) To: std-proposals_at_[hidden] Cc: Language Lawyer <language.lawyer_at_[hidden]> Subject: Re: [std-proposals] Allowing access to object representations On 17/08/2019 23:02, sdkrystian via Std-Proposals wrote:> > But where the object representation of a zero size base class subobject of `o` will appear?> You seem to guarantee that it, despite having zero size, still has sizeof(T) ≠ 0 elements.> > It won't appear in the enclosing object (the wording only guarantees so for objects of nonzero size); specifying so would just be extraneous wording.A zero size base class subobject with nonzero elements in its object representation which do not "appear" in its enclosing object's representation sounds weird.-- Std-Proposals mailing listStd-Proposals_at_[hidden]://lists.isocpp.org/mailman/listinfo.cgi/std-proposals

Received on 2019-08-17 17:42:33