From owner-freebsd-current  Fri Mar 22 16:11:17 2002
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Date: Sat, 23 Mar 2002 11:07:07 +1100 (EST)
From: Bruce Evans <bde@zeta.org.au>
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To: Garrett Wollman <wollman@lcs.mit.edu>
Cc: "M. Warner Losh" <imp@village.org>, <current@FreeBSD.ORG>
Subject: Re: X11 breakage
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On Fri, 22 Mar 2002, Garrett Wollman wrote:

> <<On Fri, 22 Mar 2002 10:08:05 -0700 (MST), "M. Warner Losh" <imp@village.org> said:
>
> > -int	ioctl(int, unsigned long, ...);
> > +int	ioctl __P((int, unsigned long, ...));
>
> 	int (ioctl)(int, unsigned long, ...);
>
> is the ISO-sanctioned way.

It is just a more robust hack when used in system headers:

	#define	ioctl	you lose
	#include <sys/ioctl.h>

gives undefined behaviour which happens to break both of the above.

Bruce


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