--- kdiff3-1.9.0/src/TypeUtils.h	2021-05-01 22:07:01.000000000 +0200
+++ kdiff3-1.9.0-gcc11/src/TypeUtils.h	2021-05-04 18:53:45.552580257 +0200
@@ -9,6 +9,7 @@
 
 #include <stdlib.h>
 #include <type_traits>
+#include <limits>
 
 #include <QtGlobal>