misc/156637: sys/types.h can't be included when _XOPEN_SOURCE is
wollman at hergotha.csail.mit.edu
Mon Apr 25 18:00:24 UTC 2011
The following reply was made to PR misc/156637; it has been noted by GNATS.
From: Garrett Wollman <wollman at hergotha.csail.mit.edu>
To: streambag at streambag.se
Cc: freebsd-gnats-submit at freebsd.org
Subject: Re: misc/156637: sys/types.h can't be included when _XOPEN_SOURCE is
Date: Mon, 25 Apr 2011 13:51:31 -0400 (EDT)
>When including <sys/file.h> with _XOPEN_SOURCE defined to 500 or higher, compila
>tion will fail with a message similar to this one (using clang, gcc fails with a
> similar message):
Which edition of the standard specifies <sys/file.h>? It's not in my
copy of Issue 6 (SUSv3) or Issue 7 (SUSv4).
I'd say it's the application code that is in error. It should not be
defining _XOPEN_SOURCE and then including (implementation private)
header files which are not defined in the relevant standard.
Do we seriously need to start writing our headers like:
#error "This is a non-standard header, but you have specified strict standard compliance."
? This probably goes along with my fix to <sys/cdefs.h> which does:
#error "Application defined preprocessor macro in the implementation namespace."
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