Add missing include.

taocpp · Dec 13, 2024 · 8cd4700 · 8cd4700
1 parent 1efdaf1
commit 8cd4700
Showing 1 changed file with 1 addition and 0 deletions.
diff --git a/src/test/pegtl/internal_constexpr.cpp b/src/test/pegtl/internal_constexpr.cpp
@@ -2,6 +2,7 @@
 // Distributed under the Boost Software License, Version 1.0.
 // (See accompanying file LICENSE_1_0.txt or copy at https://www.boost.org/LICENSE_1_0.txt)
 
+#include <functional>
 #include <type_traits>
 
 #include "test.hpp"