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Message-ID: <1399576926.12065.62.camel@eris.loria.fr>
Date: Thu, 08 May 2014 21:22:06 +0200
From: Jens Gustedt <jens.gustedt@...ia.fr>
To: musl@...ts.openwall.com
Subject: Re: [PATCH] add definition of max_align_t to stddef.h
Am Donnerstag, den 08.05.2014, 21:11 +0200 schrieb Paweł Dziepak:
> 2014-05-08 20:45 GMT+02:00 Jens Gustedt <jens.gustedt@...ia.fr>:
> > Hello,
> >
> > Am Donnerstag, den 08.05.2014, 13:41 -0400 schrieb Rich Felker:
> >> BTW in your above example, it's not even clear to me if that use of
> >> alignas is valid.
> >
> > Besides the question of such a thing makes sense or noţ with the
> > current version of the standard it isn't syntactically valid. alignas
> > can't be applied to struct fields. So for the moment the whole
> > discussion in the standard about types with extended alignment is
> > pointless.
> >
> > This issue has been raised as a defect report, and it seems that the
> > committee agrees to change this in a corrigendum.
> >
> > http://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_444.htm
>
> My bad,
no, no, the "bad" is clearly in the standard, this is by no means easy
to read nor to understand
all that max_align_t discussion shows that the alignment stuff in the
standard is underspecified and is missing semantics.
Jens
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