Date: Wed, 04 Feb 2009 15:44:14 +0100 From: Alexander Leidinger <Alexander@Leidinger.net> To: Bruce Evans <brde@optusnet.com.au> Cc: svn-src-head@freebsd.org, svn-src-all@freebsd.org, Christoph Mallon <christoph.mallon@gmx.de>, Warner Losh <imp@freebsd.org>, src-committers@freebsd.org Subject: Re: svn commit: r188098 - head/lib/libc/string Message-ID: <20090204154414.1949765y56lfhi80@webmail.leidinger.net> In-Reply-To: <20090204212854.F51932@delplex.bde.org> References: <200902032025.n13KPaCV041012@svn.freebsd.org> <4988AB83.2050203@gmx.de> <20090204212854.F51932@delplex.bde.org>
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Quoting Bruce Evans <brde@optusnet.com.au> (from Wed, 4 Feb 2009
22:27:59 +1100 (EST)):
> On Tue, 3 Feb 2009, Christoph Mallon wrote:
>
>> Warner Losh schrieb:
>>> Modified: head/lib/libc/string/strmode.c
>>> ==============================================================================
>>> --- head/lib/libc/string/strmode.c Tue Feb 3 20:01:51 2009 (r188097)
>>> +++ head/lib/libc/string/strmode.c Tue Feb 3 20:25:36 2009 (r188098)
>>> @@ -38,7 +38,7 @@ __FBSDID("$FreeBSD$");
>>> #include <string.h>
>>> void
>>> -strmode(mode_t mode, char *p)
>>> +strmode(/* mode_t */ int mode, char *p)
>>> {
>>> /* print type */
>>> switch (mode & S_IFMT) {
>>
>> The manpage states that the first parameter of strmode() is a
>> mode_t. What's wrong - the implementation (both in header and
>> definition) or the documentation?
>
> The man page is wrong. strtomode() should take an int arg (actually
> the default (unary) promotion of a mode_t) for the the same reasons
> that memchr() does -- because these interfaces should be usable by K&R
> compilers and/or by standard C compilers without a protoype in scope.
> Even if this is no longer required, binary compatibily requires the
> interfaces to be the same as the ones that used to be required. The
> requirement for binary compatibility also prevents "fixing" interfaces
> to be "ANSI" in headers (if you "fix" prototypes there then you will
> get obscure runtime errors instead of tinderbox errors).
Is this also true for the current use of symbol versioning in our
libc? I thought this is supposed to "fix" this problem (assuming we
add an UPDATING entry that users have to make sure that they to a full
installworld to habe the includes and the lib in sync)?
Bye,
Alexander.
--
Sometimes the best medicine is to stop taking something.
http://www.Leidinger.net Alexander @ Leidinger.net: PGP ID = B0063FE7
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