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Date: Fri, 16 Jan 2009 12:39:28 +0100
From: Stefan Farfeleder <stefan@fafoe.narf.at>
To: Danny Braniss <danny@cs.huji.ac.il>
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Cc: Christian Kandeler <christian.kandeler@hob.de>,
	Garrett Cooper <yanefbsd@gmail.com>,
	Christoph Mallon <christoph.mallon@gmx.de>, freebsd-hackers@freebsd.org
Subject: Re: Confused by segfault with legitimate call to strerror(3) on
	amd64 / sysctl (3) setting `odd' errno's
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On Fri, Jan 16, 2009 at 01:33:38PM +0200, Danny Braniss wrote:
> some facts:
> #include <stdio.h>
> int
> main()
> {
>      printf("%s\n", strerror(2));
>      return 0;
> }
> 
> 	1- it works fine on i386
> 	2- it bombs on amd64
> 	3- with a local strerror.c (instead of the one in libc)
> 	   works fine
> so, there is something realy wrong going on here!
> (and it gows back to at least 7.0-stable)

The compiler thinks strerror returns an int.  Include <string.h>.