vtk-m brigand nows knows what workaround are only needed for CUDA 9.

Some CUDA 9 compiler issues are fixed in CUDA 10.

vtkm/internal/brigand.hpp

@@ -24,12 +24,19 @@
 #define BRIGAND_COMP_CLANG
 #endif
 #endif
+
 #if defined(__CUDACC__)
+
+#if __CUDACC_VER_MAJOR__ == 9
+#define BRIGAND_COMP_CUDA_9
+#endif
 #if __CUDACC_VER_MAJOR__ >= 9
 #define BRIGAND_COMP_CUDA_9PLUS
 #endif
+
 #define BRIGAND_COMP_CUDA
 #endif
+
 #include <type_traits>
 namespace brigand
 {
@@ -259,9 +266,12 @@ namespace brigand
     };
 
     template<std::size_t N, typename Seq> struct at_impl;
-#if defined(BRIGAND_COMP_CUDA_9PLUS) || defined(BRIGAND_COMP_INTEL)
-    //Both CUDA 9 and the Intel 18 compiler series have a problem deducing the
-    //type so we are just going
+#if defined(BRIGAND_COMP_CUDA_9) || defined(BRIGAND_COMP_INTEL)
+    //Both CUDA 9 and the Intel 18 compiler series have a problem when
+    //at_impl ::type typedef is produced through inheritance of a `T`
+    //that is deduced through an unimplemented static functions return type.
+    //So we don't do the inherit trick, but instead manually construct
+    //a ::type typedef ourself.
     template <std::size_t N, template <typename...> class L, class... Ts>
     struct at_impl<N, L<Ts...>>
     {