From 5ef08f4172b9c3bcf1c8455d4dbd81b3630d3828 Mon Sep 17 00:00:00 2001
From: "M. Galib Uludag" <m231@tnctr.com>
Date: Mon, 27 Mar 2023 21:30:42 +0200
Subject: [PATCH] added constraints for std format

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

diff --git a/include/spdlog/common.h b/include/spdlog/common.h
index fdeae6a0..b7297d3e 100644
--- a/include/spdlog/common.h
+++ b/include/spdlog/common.h
@@ -162,6 +162,7 @@ struct format_string_wrapper
     {}
 #else
     template <typename S>
+    requires std::is_convertible_v<S, T>
     SPDLOG_CONSTEXPR format_string_wrapper(S fmtstr, details::source_location loc = details::source_location::current())
         : fmt_{fmtstr}
         , loc_{loc}