From: "H. Peter Anvin" <hpa@zytor.com>
To: Francis Moreau <francis.moro@gmail.com>
Cc: linux-kernel@vger.kernel.org
Subject: Re: memparse(), simple_strtoul() prototypes...
Date: Sun, 18 Feb 2007 16:30:48 -0800 [thread overview]
Message-ID: <45D8EFB8.4050805@zytor.com> (raw)
In-Reply-To: <38b2ab8a0702180804l26d99a01y558bce2ee964d973@mail.gmail.com>
Francis Moreau wrote:
> Hi,
>
> I must miss something...
>
> Looking at these prototypes
>
> unsigned long simple_strtoul(const char *cp, char **endp,unsigned int base)
> unsigned long long memparse (char *ptr, char **retptr)
>
> I'm really wondering why not all parameters are not all 'const'. None
> of these functions modify any pointer containts. And simple_strtoul()
> ends up doing sometghing like:
>
> if (endp)
> *endp = (char *)cp;
>
> Could anyone shed some light ?
The C standard behaves like that, too, mostly because C doesn't have a
way to say "X is const iff Y is const" (unlike C++, btw.)
-hpa
next prev parent reply other threads:[~2007-02-19 0:30 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-02-18 16:04 memparse(), simple_strtoul() prototypes Francis Moreau
2007-02-19 0:30 ` H. Peter Anvin [this message]
2007-02-19 13:03 ` Francis Moreau
2007-02-19 14:05 ` Avi Kivity
2007-02-20 8:19 ` Francis Moreau
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