[src/trunk]: src/sys/kern Avoid undefined behaviour.

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

details:   https://anonhg.NetBSD.org/src/rev/c6f59c6e4dec
branches:  trunk
changeset: 373552:c6f59c6e4dec
user:      skrll <skrll%NetBSD.org@localhost>
date:      Fri Feb 17 06:34:46 2023 +0000

description:
Avoid undefined behaviour.

diffstat:

 sys/kern/subr_pool.c |  6 +++---
 1 files changed, 3 insertions(+), 3 deletions(-)

diffs (27 lines):

diff -r a0411801c711 -r c6f59c6e4dec sys/kern/subr_pool.c
--- a/sys/kern/subr_pool.c      Fri Feb 17 06:24:26 2023 +0000
+++ b/sys/kern/subr_pool.c      Fri Feb 17 06:34:46 2023 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: subr_pool.c,v 1.285 2022/07/16 10:20:21 simonb Exp $   */
+/*     $NetBSD: subr_pool.c,v 1.286 2023/02/17 06:34:46 skrll Exp $    */
 
 /*
  * Copyright (c) 1997, 1999, 2000, 2002, 2007, 2008, 2010, 2014, 2015, 2018,
@@ -33,7 +33,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: subr_pool.c,v 1.285 2022/07/16 10:20:21 simonb Exp $");
+__KERNEL_RCSID(0, "$NetBSD: subr_pool.c,v 1.286 2023/02/17 06:34:46 skrll Exp $");
 
 #ifdef _KERNEL_OPT
 #include "opt_ddb.h"
@@ -3317,7 +3317,7 @@
                unsigned int idx = pr_item_bitmap_index(pp, ph, (void *)addr);
                pool_item_bitmap_t *bitmap =
                    ph->ph_bitmap + (idx / BITMAP_SIZE);
-               pool_item_bitmap_t mask = 1 << (idx & BITMAP_MASK);
+               pool_item_bitmap_t mask = 1U << (idx & BITMAP_MASK);
 
                return (*bitmap & mask) == 0;
        } else {