From 2f3399e02f21117e2721d25bf6ffa31a467d68c3 Mon Sep 17 00:00:00 2001
From: Mateusz Pusz <mateusz.pusz@gmail.com>
Date: Tue, 26 Nov 2024 15:12:50 +0100
Subject: [PATCH] fix: gcc compilation fixed

---
 .../include/mp-units/framework/representation_concepts.h     | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/src/core/include/mp-units/framework/representation_concepts.h b/src/core/include/mp-units/framework/representation_concepts.h
index c572b632..e616837f 100644
--- a/src/core/include/mp-units/framework/representation_concepts.h
+++ b/src/core/include/mp-units/framework/representation_concepts.h
@@ -33,10 +33,11 @@ import std;
 #else
 #include <concepts>
 #include <cstdint>
+#include <cstdlib>
 #include <functional>
 #include <type_traits>
-#endif
-#endif
+#endif  // MP_UNITS_IMPORT_STD
+#endif  // MP_UNITS_IN_MODULE_INTERFACE
 
 namespace mp_units {