Date: Wed, 21 Feb 2001 09:56:08 -0700 From: Warner Losh <imp@harmony.village.org> To: "Jacques A. Vidrine" <n@nectar.com> Cc: freebsd-hackers@FreeBSD.ORG Subject: Re: portability sanity check Message-ID: <200102211656.f1LGu8W97533@harmony.village.org> In-Reply-To: Your message of "Wed, 21 Feb 2001 10:25:16 CST." <20010221102516.B93525@hamlet.nectar.com> References: <20010221102516.B93525@hamlet.nectar.com> <20010221094228.A93221@hamlet.nectar.com> <200102211553.f1LFrvs07412@billy-club.village.org>
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In message <20010221102516.B93525@hamlet.nectar.com> "Jacques A. Vidrine" writes: : On Wed, Feb 21, 2001 at 08:53:57AM -0700, Warner Losh wrote: : > The standard requires that (void *) &foo == (void *) &foo->s : : Thanks, that is what I was trying to track down but couldn't find it. : I also thought that perhaps a structure has the same requirement : alignments as its first member ... I think that means the same thing : as you've stated. There is some verbage in the structure layout part of the standard that makes this a logical conclusion. However, it is overly tricky code. But then again to do the generic sort of thing you want to do, you have to resort to C macros, or other gross things to make it generic. The question becomes how do you do that in the least gross way... Warner To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message
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