[src/trunk]: src/sys/arch/mips/mips avoid duplicate "ddb_regs" in crash with ...

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

details:   https://anonhg.NetBSD.org/src/rev/ce408d81b8a3
branches:  trunk
changeset: 961180:ce408d81b8a3
user:      mrg <mrg%NetBSD.org@localhost>
date:      Mon Apr 12 02:23:41 2021 +0000

description:
avoid duplicate "ddb_regs" in crash with GCC 10 and -fcommon default.

diffstat:

 sys/arch/mips/mips/db_interface.c |  6 ++++--
 1 files changed, 4 insertions(+), 2 deletions(-)

diffs (28 lines):

diff -r 89d7d43bfe5c -r ce408d81b8a3 sys/arch/mips/mips/db_interface.c
--- a/sys/arch/mips/mips/db_interface.c Mon Apr 12 02:23:01 2021 +0000
+++ b/sys/arch/mips/mips/db_interface.c Mon Apr 12 02:23:41 2021 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: db_interface.c,v 1.92 2021/02/23 07:13:52 mrg Exp $    */
+/*     $NetBSD: db_interface.c,v 1.93 2021/04/12 02:23:41 mrg Exp $    */
 
 /*
  * Mach Operating System
@@ -27,7 +27,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: db_interface.c,v 1.92 2021/02/23 07:13:52 mrg Exp $");
+__KERNEL_RCSID(0, "$NetBSD: db_interface.c,v 1.93 2021/04/12 02:23:41 mrg Exp $");
 
 #ifdef _KERNEL_OPT
 #include "opt_multiprocessor.h"
@@ -74,7 +74,9 @@
 volatile u_int ddb_cpu = NOCPU;
 
 int            db_active = 0;
+#ifdef _KERNEL
 db_regs_t      ddb_regs;
+#endif
 
 #if (MIPS32 + MIPS32R2 + MIPS64 + MIPS64R2) > 0
 static void db_watch_cmd(db_expr_t, bool, db_expr_t, const char *);