git: ff1c63671b73 - main - kdb_sysctl_trap: suppress gcc -Warray-bounds
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Date: Tue, 09 Jul 2024 18:45:17 UTC
The branch main has been updated by rlibby:
URL: https://cgit.FreeBSD.org/src/commit/?id=ff1c63671b7372ef7d52da11d02e082876c22654
commit ff1c63671b7372ef7d52da11d02e082876c22654
Author: Ryan Libby <rlibby@FreeBSD.org>
AuthorDate: 2024-07-09 17:58:21 +0000
Commit: Ryan Libby <rlibby@FreeBSD.org>
CommitDate: 2024-07-09 17:58:21 +0000
kdb_sysctl_trap: suppress gcc -Warray-bounds
gcc diagnosed a dereference of 0x10 with -Warray-bounds, which is
entirely sensible, except that this is a deliberate trap. Throw gcc off
with a volatile pointer.
Reviewed by: kib (previous version)
Differential Revision: https://reviews.freebsd.org/D45917
---
sys/kern/subr_kdb.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/sys/kern/subr_kdb.c b/sys/kern/subr_kdb.c
index a7fc2284cbcf..56264a96c9fa 100644
--- a/sys/kern/subr_kdb.c
+++ b/sys/kern/subr_kdb.c
@@ -238,7 +238,7 @@ static int
kdb_sysctl_trap(SYSCTL_HANDLER_ARGS)
{
int error, i;
- int *addr = (int *)0x10;
+ int *volatile addr = (int *)0x10;
error = sysctl_wire_old_buffer(req, sizeof(int));
if (error == 0) {