From 1b46cb523df32c4d1d4aaab1168b8f7f808206c1 Mon Sep 17 00:00:00 2001
From: John Birrell <jb@FreeBSD.org>
Date: Thu, 30 Apr 1998 09:38:03 +0000
Subject: [PATCH] Make errno finally and permanently thread-aware so that it is
 no longer necessary to compile with _THREAD_SAFE defined. This means that
 people will get thread-aware code whether they like it or not. This change is
 required to allow a process to link against libpthread and libc to use kernel
 threads (and prevent each thread from clobbering another thread's errno just
 be doing a syscall).

This is bound to break some ports, but it is strictly allowed by ANSI C,
so anything that breaks as a result was already broken anyway 8-).
"Sorry".
---
 sys/sys/errno.h | 6 +-----
 1 file changed, 1 insertion(+), 5 deletions(-)

diff --git a/sys/sys/errno.h b/sys/sys/errno.h
index 91a91791c9a..0430bfedf38 100644
--- a/sys/sys/errno.h
+++ b/sys/sys/errno.h
@@ -36,22 +36,18 @@
  * SUCH DAMAGE.
  *
  *	@(#)errno.h	8.5 (Berkeley) 1/21/94
- * $Id: errno.h,v 1.8 1997/12/06 11:28:06 bde Exp $
+ * $Id: errno.h,v 1.9 1998/04/13 17:45:00 sos Exp $
  */
 
 #ifndef _SYS_ERRNO_H_
 #define _SYS_ERRNO_H_
 
 #ifndef KERNEL
-#ifdef	_THREAD_SAFE
 #include <sys/cdefs.h>
 __BEGIN_DECLS
 int *	__error __P((void));
 __END_DECLS
 #define	errno		(* __error())
-#else
-extern int errno;			/* global error number */
-#endif
 #endif
 
 #define	EPERM		1		/* Operation not permitted */