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Re: Alias sets for VLAs and strict aliasing warnings (PR 41673)

From: "Joseph S. Myers" <joseph at codesourcery dot com>
To: Richard Guenther <richard dot guenther at gmail dot com>
Cc: gcc-patches at gcc dot gnu dot org
Date: Fri, 23 Oct 2009 12:21:24 +0000 (UTC)
Subject: Re: Alias sets for VLAs and strict aliasing warnings (PR 41673)
References: <Pine.LNX.4.64.0910230225320.17514@digraph.polyomino.org.uk> <84fc9c000910230221g43c9a7f1o2086d50d9c21be71@mail.gmail.com>

On Fri, 23 Oct 2009, Richard Guenther wrote:

> The change is ok, but I wonder why the C FE sets
> TYPE_STRUCTURAL_EQUALITY_P on VLAs.  As you can see

It's not the front end setting it - tree.c:build_index_type sets it for 
the index type with nonconstant bounds, while tree.c:build_array_type sets 
it for arrays if it is set for either the element type or the index type.

-- 
Joseph S. Myers
joseph@codesourcery.com

Follow-Ups:
- Re: Alias sets for VLAs and strict aliasing warnings (PR 41673)
  - From: Richard Guenther

References:
- Alias sets for VLAs and strict aliasing warnings (PR 41673)
  - From: Joseph S. Myers
- Re: Alias sets for VLAs and strict aliasing warnings (PR 41673)
  - From: Richard Guenther

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