From fc7e9c8721b95661cc40e2d1d2329677d2a21387 Mon Sep 17 00:00:00 2001
From: Gabi Melman <gmelman1@gmail.com>
Date: Mon, 9 Feb 2026 21:59:45 +0200
Subject: [PATCH] Update common-inl.h

Added missing include
---
 include/spdlog/common-inl.h | 1 +
 1 file changed, 1 insertion(+)

diff --git a/include/spdlog/common-inl.h b/include/spdlog/common-inl.h
index 77064756..4ce5e91d 100644
--- a/include/spdlog/common-inl.h
+++ b/include/spdlog/common-inl.h
@@ -9,6 +9,7 @@
 
 #include <algorithm>
 #include <iterator>
+#include <cctype>
 
 namespace spdlog {
 namespace level {