From e707ee09465e7929b2b5e39d1aff46277c0fa676 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Ond=C5=99ej=20Sur=C3=BD?= <ondrej@isc.org>
Date: Thu, 15 Aug 2024 09:12:18 +0200
Subject: [PATCH] Ignore errno returned from rewind() in the interface iterator

The clang-scan 19 has reported that we are ignoring errno after the call
to rewind().  As we don't really care about the result, just silence the
error, the whole code will be removed in the development version anyway
as it is not needed.

(cherry picked from commit dda5ba53dfaa3926b16cf3c786ae2395ced89ca3)
---
 lib/isc/interfaceiter.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/lib/isc/interfaceiter.c b/lib/isc/interfaceiter.c
index 566c5bd465..ed06dce265 100644
--- a/lib/isc/interfaceiter.c
+++ b/lib/isc/interfaceiter.c
@@ -367,6 +367,7 @@ static void
 linux_if_inet6_first(isc_interfaceiter_t *iter) {
 	if (iter->proc != NULL) {
 		rewind(iter->proc);
+		errno = 0; /* Ignore the errno */
 		(void)linux_if_inet6_next(iter);
 	} else {
 		iter->valid = ISC_R_NOMORE;