On Mon, Dec 20, 2010 at 4:06 PM, Christian Ludwig
<chrissicool@chrissicool.net> wrote:
quoted text
> I was playing around in the arch code of OpenBSD/i386 lately, and again
> and again found that sys/user.h was not safe against multiple inclusions
> from the same source file. Is that for a reason? One of my header files
> needs to include sys/user.h, which creates a huge mess.

You have a header that needs the full struct user definition and can't
make do with a forward declaration of it?

(Note that the struct user definition is the _only_ correct reason to
#include <sys/user.h>)

This has been handled so far by simply including sys/user.h in each
file that needs the header.  For example, machine/freebsd_machdep.h
would seem to need the struct user definition for its offsetof usage,
but instead the one .c file that uses that header pulls it in.


Philip Guenther