From f629b913040f5b1a26da4c4b64e6ef4351865505 Mon Sep 17 00:00:00 2001
From: Melven Roehrig-Zoellner <Melven.Roehrig-Zoellner@DLR.de>
Date: Sat, 13 Jan 2024 18:04:16 +0100
Subject: [PATCH] extra_arg: avoid error with msvc

---
 include/jlcxx/attr.hpp | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/include/jlcxx/attr.hpp b/include/jlcxx/attr.hpp
index c42f7f6..173d090 100644
--- a/include/jlcxx/attr.hpp
+++ b/include/jlcxx/attr.hpp
@@ -147,7 +147,10 @@ namespace detail
     ExtraFunctionData result;
 
     // helper lambda
-    [[maybe_unused]] constexpr auto handleExtraArgs = [](ExtraFunctionData& f, auto argi)
+#ifndef _MSC_VER
+    [[maybe_unused]]
+#endif
+    constexpr auto handleExtraArgs = [](ExtraFunctionData& f, auto argi)
     {
       using T = typename std::decay_t<decltype(argi)>;
       process_attribute<T>::init(std::forward<T>(argi), f);