From d302773e0e080a1ae5b27b90633c903b1ac8f625 Mon Sep 17 00:00:00 2001
From: riastradh <riastradh@NetBSD.org>
Date: Wed, 20 Mar 2024 18:47:59 +0000
Subject: [PATCH] apei(4): Pacify -Wsign-compare.

Assert that the parsing made forward progress too while here.

PR kern/58046
---
 sys/dev/acpi/apei_hest.c | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/sys/dev/acpi/apei_hest.c b/sys/dev/acpi/apei_hest.c
index d7549c61ce09..b35e48e911bd 100644
--- a/sys/dev/acpi/apei_hest.c
+++ b/sys/dev/acpi/apei_hest.c
@@ -1,4 +1,4 @@
-/*	$NetBSD: apei_hest.c,v 1.1 2024/03/20 17:11:43 riastradh Exp $	*/
+/*	$NetBSD: apei_hest.c,v 1.2 2024/03/20 18:47:59 riastradh Exp $	*/
 
 /*-
  * Copyright (c) 2024 The NetBSD Foundation, Inc.
@@ -46,7 +46,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: apei_hest.c,v 1.1 2024/03/20 17:11:43 riastradh Exp $");
+__KERNEL_RCSID(0, "$NetBSD: apei_hest.c,v 1.2 2024/03/20 18:47:59 riastradh Exp $");
 
 #include <sys/types.h>
 
@@ -917,7 +917,9 @@ apei_hest_attach(struct apei_softc *sc)
 			    " %"PRIu32"\n", i);
 			break;
 		}
-		KASSERT((const char *)next - (const char *)header <= resid);
+		KASSERT(header < next);
+		KASSERT((size_t)((const char *)next - (const char *)header) <=
+		    resid);
 		resid -= (const char *)next - (const char *)header;
 	}
 	if (resid) {