[src/trunk]: src/sys/arch/amd64/amd64 Annotate tautological if, so that clang...

[joerg <joerg%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/b3b8c0037f30
branches:  trunk
changeset: 779757:b3b8c0037f30
user:      joerg <joerg%NetBSD.org@localhost>
date:      Sat Jun 16 16:42:26 2012 +0000

description:
Annotate tautological if, so that clang doesn't warn about the dt usage
later on.

diffstat:

 sys/arch/amd64/amd64/machdep.c |  5 +++--
 1 files changed, 3 insertions(+), 2 deletions(-)

diffs (26 lines):

diff -r 31d5ba722072 -r b3b8c0037f30 sys/arch/amd64/amd64/machdep.c
--- a/sys/arch/amd64/amd64/machdep.c    Sat Jun 16 14:38:54 2012 +0000
+++ b/sys/arch/amd64/amd64/machdep.c    Sat Jun 16 16:42:26 2012 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: machdep.c,v 1.184 2012/06/12 22:16:05 bouyer Exp $     */
+/*     $NetBSD: machdep.c,v 1.185 2012/06/16 16:42:26 joerg Exp $      */
 
 /*-
  * Copyright (c) 1996, 1997, 1998, 2000, 2006, 2007, 2008, 2011
@@ -111,7 +111,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: machdep.c,v 1.184 2012/06/12 22:16:05 bouyer Exp $");
+__KERNEL_RCSID(0, "$NetBSD: machdep.c,v 1.185 2012/06/16 16:42:26 joerg Exp $");
 
 /* #define XENDEBUG_LOW  */
 
@@ -2206,6 +2206,7 @@
        } else {
                if (seg != GUDATA_SEL || seg != GUDATA32_SEL)
                        return EINVAL;
+               __builtin_unreachable();
        }
 
        sdp = (struct mem_segment_descriptor *)(dt + off);