diff -up VTK-9.4.1/ThirdParty/diy2/vtkdiy2/include/vtkdiy2/itlib/small_vector.hpp.cstdint VTK-9.4.1/ThirdParty/diy2/vtkdiy2/include/vtkdiy2/itlib/small_vector.hpp
--- VTK-9.4.1/ThirdParty/diy2/vtkdiy2/include/vtkdiy2/itlib/small_vector.hpp.cstdint	2024-12-27 10:08:14.000000000 -0700
+++ VTK-9.4.1/ThirdParty/diy2/vtkdiy2/include/vtkdiy2/itlib/small_vector.hpp	2025-02-17 16:26:27.950611287 -0700
@@ -140,6 +140,7 @@
 
 #include <type_traits>
 #include <cstddef>
+#include <cstdint>
 #include <memory>
 
 #define ITLIB_SMALL_VECTOR_ERROR_HANDLING_NONE  0
diff -up VTK-9.4.1/ThirdParty/vtkm/vtkvtkm/vtk-m/vtkm/thirdparty/diy/vtkmdiy/include/vtkmdiy/thirdparty/itlib/small_vector.hpp.cstdint VTK-9.4.1/ThirdParty/vtkm/vtkvtkm/vtk-m/vtkm/thirdparty/diy/vtkmdiy/include/vtkmdiy/thirdparty/itlib/small_vector.hpp
--- VTK-9.4.1/ThirdParty/vtkm/vtkvtkm/vtk-m/vtkm/thirdparty/diy/vtkmdiy/include/vtkmdiy/thirdparty/itlib/small_vector.hpp.cstdint	2024-12-27 10:08:14.000000000 -0700
+++ VTK-9.4.1/ThirdParty/vtkm/vtkvtkm/vtk-m/vtkm/thirdparty/diy/vtkmdiy/include/vtkmdiy/thirdparty/itlib/small_vector.hpp	2025-02-17 16:26:36.924266397 -0700
@@ -140,6 +140,7 @@
 
 #include <type_traits>
 #include <cstddef>
+#include <cstdint>
 #include <memory>
 
 #define ITLIB_SMALL_VECTOR_ERROR_HANDLING_NONE  0