From e7a945f389196fcb114d25f7a1dd1369d94fb0d8 Mon Sep 17 00:00:00 2001
From: Warner Losh <imp@FreeBSD.org>
Date: Thu, 12 Jun 2003 04:44:15 +0000
Subject: If BURN_BRIDGES or _FreeBSD_version >= 6.0 and OBSOLETE_IN_6 is
 defined, then #error out.  This is protected inside of #ifdef _KERNEL. This
 allows one to tag code in the tree that will be deleted in 6.x with the
 'OBSOLETE_IN_6 #define at the top of the file.  This makes for easy grepping,
 plus a mechanism that automatically fails the compilation of those files that
 are so tagged after we do the cutover.

---
 sys/sys/param.h | 4 ++++
 1 file changed, 4 insertions(+)

(limited to 'sys')

diff --git a/sys/sys/param.h b/sys/sys/param.h
index 85890edd304e1..6c796abd963b0 100644
--- a/sys/sys/param.h
+++ b/sys/sys/param.h
@@ -89,6 +89,10 @@
 
 /* More types and definitions used throughout the kernel. */
 #ifdef _KERNEL
+#if (defined(BURN_BRIDGES) || __FreeBSD_version >= 600000) \
+	&& defined(OBSOLETE_IN_6)
+#error "This file contains obsolete code to be removed in 6.0-current"
+#endif
 #include <sys/cdefs.h>
 #include <sys/errno.h>
 #include <sys/time.h>
-- 
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