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Subject: Re: [ub] Aliasing char16_t with int_least16_t, etc.
From: Jeffrey Yasskin (jyasskin_at_[hidden])
Date: 2013-11-03 21:24:27


On Wed, Oct 30, 2013 at 3:06 PM, Lawrence Crowl <Lawrence_at_[hidden]> wrote:
> Even further, we consider saying that we can access any integral type
> with the same size and alignment.

And a further generalization would be to say that we can alias any
layout-compatible types, and then broaden "layout-compatible" to cover
the integral cases we care about. Layout-compatible types can already
be aliased through unions, but only when they're actually accessed
through unions. This could provide the language side of
http://cplusplus.github.io/LWG/lwg-active.html#2335.

Thoughts?

Jeffrey


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