Date: Fri, 5 Sep 2003 10:34:53 +0200 From: Alexander Leidinger <Alexander@Leidinger.net> To: Marcel Moolenaar <marcel@xcllnt.net> Cc: current@freebsd.org Subject: Re: Question about genassym, locore.s and 0-sized arrays (showstopper for an icc compiled kernel) Message-ID: <20030905103453.2263774c.Alexander@Leidinger.net> In-Reply-To: <20030904225731.GA48910@ns1.xcllnt.net> References: <20030904180448.021a1b6b.Alexander@Leidinger.net> <20030904162858.GI98381@dan.emsphone.com> <20030905001411.3a9030b3.Alexander@Leidinger.net> <20030904225123.GB39916@dan.emsphone.com> <20030904225731.GA48910@ns1.xcllnt.net>
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On Thu, 4 Sep 2003 15:57:31 -0700
Marcel Moolenaar <marcel@xcllnt.net> wrote:
> On Thu, Sep 04, 2003 at 05:51:23PM -0500, Dan Nelson wrote:
> >
> > I guess the correct question to be asking is "does the ELF format allow
> > 0-length symbols?"
>
> Of course. What size do you think a label should have otherwise?
After mentioning the difference between gcc and icc I've got this
response:
---snip---
Regarding the zero size array issue:
Objects with zero size are incomplete objects and cannot be used in any
meaningful way. Zero length arrays are explicitly prohibited by the
Standard. We allowed zero length arrays as a feature request. We set
their size to one so operations involving them can make some kind of
sense.
---snip---
Can you please give me "something" a compiler developer should
understand (an URL, a reference into some standard, a description, ...)?
As long as we can provide strong evidence that gcc doesn't do the wrong
thing Intel will change icc to be compatible with gcc.
Bye,
Alexander.
--
Give a man a fish and you feed him for a day;
teach him to use the Net and he won't bother you for weeks.
http://www.Leidinger.net Alexander @ Leidinger.net
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