Date: Thu, 6 Mar 2003 19:49:45 +0100 From: "Simon 'corecode' Schubert" <corecode@corecode.ath.cx> To: standards@freebsd.org Cc: Mike Barcroft <mike@freebsd.org>, markm@freebsd.org Subject: Re: cvs commit: src/sys/sys stat.h Message-ID: <20030306194945.126c092f.corecode@corecode.ath.cx> In-Reply-To: <200302262010.h1QKAsMT007004@repoman.freebsd.org>
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Lately Mike Barcroft told:
> mike 2003/02/26 12:10:54 PST
>
> Modified files:
> sys/sys stat.h
> Log:
> Change spelling of `u_int' to `unsigned int' in the POSIX case.
if this catched the POSIX case it would be good. bad thing is it doesn't
catch it. imagine:
% cat <<EOF > stattest.c
#define _XOPEN_SOURCE 600
#include <sys/types.h>
#include <sys/stat.h>
EOF
% cc -c stattest.c
In file included from stattest.c:4:
/usr/include/sys/stat.h:127: syntax error before "u_int"
/usr/include/sys/stat.h:158: syntax error before "u_int"
problem here is: _XOPEN_SOURCE defines _POSIX_C_SOURCE but NOT
_POSIX_SOURCE which is being checked for in many places in the source
tree:
% grep -r '#if.*_POSIX_SOURCE' /usr/include | wc -l
73
a possible fix could be:
Index: sys/sys/cdefs.h
===================================================================
RCS file: /home/ncvs/src/sys/sys/cdefs.h,v
retrieving revision 1.68
diff -u -r1.68 cdefs.h
--- sys/sys/cdefs.h 21 Oct 2002 20:50:30 -0000 1.68
+++ sys/sys/cdefs.h 6 Mar 2003 17:35:23 -0000
@@ -341,6 +341,8 @@
#define _POSIX_C_SOURCE 198808
#endif
#ifdef _POSIX_C_SOURCE
+#undef _POSIX_SOURCE
+#define _POSIX_SOURCE 1
#if _POSIX_C_SOURCE >= 200112
#define __POSIX_VISIBLE 200112
#define __ISO_C_VISIBLE 1999
but as i'm writing this patch shows other (mis?)usage of _POSIX_SOURCE:
[snip math.h]
#if !defined(_ANSI_SOURCE) && !defined(_POSIX_SOURCE)
#define M_E 2.7182818284590452354 /* e */
[...]
now stuff breaks here. what's the proper fix? changing all headers so
that _POSIX_SOURCE isn't used anymore (only _POSIX_VISIBLE and/or
_POSIX_C_SOURCE)?
cheers
simon
ps: please cc me as i'm not subscribed. reply-to headers set tho
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