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Re: Document empty structures

From: Geoffrey Keating <geoffk at apple dot com>
To: Mark Mitchell <mark at codesourcery dot com>
Cc: Richard dot Earnshaw at arm dot com, Fergus Henderson <fjh at cs dot mu dot OZ dot AU>, Geoffrey Keating <gkeating at apple dot com>, gcc-patches at gcc dot gnu dot org
Date: Mon, 14 Apr 2003 11:22:20 -0700
Subject: Re: Document empty structures

On Monday, April 14, 2003, at 11:20 AM, Mark Mitchell wrote:

On Mon, 2003-04-14 at 11:17, Richard Earnshaw wrote:
I'm pretty sure that the C++ language standard does not say that empty structures have size 1 -- AFAIK it just says that they have non-zero size (C++98 section 9, paragraph 3).
Correct. The C++ ABI says they have size 1.
Even on a machine where STRUCTURE_SIZE_BOUNDARY != 8?  I would have
thought STRUCTURE_SIZE_BOUNDARY / BITS_PER_UNIT was a more sensible
definition.
You are even more correct.  I forget what the exact calculation is, but
it does indeed take this kind of thing into account.

Could someone provide a patch?

--
Geoff Keating <geoffk at apple dot com>

Follow-Ups:
- Re: Document empty structures
  - From: Richard Earnshaw

References:
- Re: Document empty structures
  - From: Mark Mitchell

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