From 6cfb1b3b757be36cf1d6c11652dd1e1aff2e0d94 Mon Sep 17 00:00:00 2001
From: Andrei Pavel <andrei@isc.org>
Date: Wed, 17 Sep 2025 18:19:02 +0300
Subject: [PATCH] [#4107] Add missing cstring include for strerror()

---
 src/lib/util/pid_file.cc | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/lib/util/pid_file.cc b/src/lib/util/pid_file.cc
index 7483b35359..085ffd0381 100644
--- a/src/lib/util/pid_file.cc
+++ b/src/lib/util/pid_file.cc
@@ -9,6 +9,7 @@
 #include <util/pid_file.h>
 
 #include <cerrno>
+#include <cstring>
 
 #include <fcntl.h>
 #include <signal.h>
-- 
2.47.3