Include <functional> to fix compile error

Not sure why some compilers don't need this, while some do, but GCC11 throws an error when it's missing.
regina-normal · Feb 14, 2022 · 45a6a12 · 45a6a12
1 parent 4564e74
commit 45a6a12
Showing 1 changed file with 1 addition and 0 deletions.
diff --git a/engine/utilities/typeutils.h b/engine/utilities/typeutils.h
@@ -41,6 +41,7 @@
 #define __REGINA_TYPEUTILS_H
 #endif
 
+#include <functional>
 #include "regina-core.h"
 
 namespace regina {