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Re: [Nano-devel] [PATCH] Optimize the order of struct members

From: Eitan Adler
Subject: Re: [Nano-devel] [PATCH] Optimize the order of struct members
Date: Thu, 23 Aug 2018 18:27:54 -0700

On Thu, 23 Aug 2018 at 16:20, Brand Huntsman <address@hidden> wrote:

> int is arch word size (32bits on 32bit archs and 64bits on 64bit archs). 
> Apparently rex_flags is only used for case and could be stored in 8bits on 
> all archs.

This is not guaranteed by the C standard. POSIX does not mandate any
larger size either.  The minimum range is -(2^15 - 1) to 2^15-1. It
might be the case that int is commonly larger, but this can not be
relied on in portable software.

Eitan Adler

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