CUDA9: compiler error with static assert template arguments

[crtrott]

We have a unit-test which doesn't compile with CUDA9 because of some error in a static assert.

The code is:

  typedef Kokkos::View< int***[13][14], Kokkos::LayoutLeft, ExecSpace >  DLT;
  typedef Kokkos::Subview< DLT, range, int, int, int, int >  DLS1;

  static_assert( DLS1::rank == 1 && std::is_same< typename DLS1::array_layout, Kokkos::LayoutLeft >::value
               , "Subview layout error for rank 1 subview of left-most range of LayoutLeft" );

The error is:

/home/crtrott/Kokkos/kokkos/core/unit_test/TestViewMapping_subview.hpp:82:220: error: expansion pattern ‘Kokkos::pair<int, int>’ contains no argument packs
/home/crtrott/Kokkos/kokkos/core/unit_test/TestViewMapping_subview.hpp:82:228: error: expansion pattern ‘int’ contains no argument packs
/home/crtrott/Kokkos/kokkos/core/unit_test/TestViewMapping_subview.hpp:82:236: error: expansion pattern ‘int’ contains no argument packs
/home/crtrott/Kokkos/kokkos/core/unit_test/TestViewMapping_subview.hpp:82:244: error: expansion pattern ‘int’ contains no argument packs
/home/crtrott/Kokkos/kokkos/core/unit_test/TestViewMapping_subview.hpp:82:252: error: expansion pattern ‘int’ contains no argument packs
/home/crtrott/Kokkos/kokkos/core/unit_test/TestViewMapping_subview.hpp:82:255: error: template argument 3 is invalid
/home/crtrott/Kokkos/kokkos/core/unit_test/TestViewMapping_subview.hpp:82:255: error: template argument 4 is invalid
/home/crtrott/Kokkos/kokkos/core/unit_test/TestViewMapping_subview.hpp:82:255: error: template argument 5 is invalid
/home/crtrott/Kokkos/kokkos/core/unit_test/TestViewMapping_subview.hpp:82:255: error: template argument 6 is invalid
/home/crtrott/Kokkos/kokkos/core/unit_test/TestViewMapping_subview.hpp:82:255: error: template argument 7 is invalid
/home/crtrott/Kokkos/kokkos/core/unit_test/TestViewMapping_subview.hpp:82:263: error: expected template-argument before ‘::’ token
/home/crtrott/Kokkos/kokkos/core/unit_test/TestViewMapping_subview.hpp:82:263: error: expected ‘>’ before ‘::’ token
/home/crtrott/Kokkos/kokkos/core/unit_test/TestViewMapping_subview.hpp:82:297: error: wrong number of template arguments (1, should be 2)
/home/crtrott/Kokkos/kokkos/core/unit_test/TestViewMapping_subview.hpp:82:301: error: expected ‘(’ before ‘value’
/home/crtrott/Kokkos/kokkos/core/unit_test/TestViewMapping_subview.hpp:82:301: error: expected ‘)’ before ‘value’
/home/crtrott/Kokkos/kokkos/core/unit_test/TestViewMapping_subview.hpp:82:384: error: expected ‘,’ before ‘;’ token
/home/crtrott/Kokkos/kokkos/core/unit_test/TestViewMapping_subview.hpp:82:384: error: expected string-literal before ‘;’ token
/home/crtrott/Kokkos/kokkos/core/unit_test/TestViewMapping_subview.hpp:82:384: error: expected ‘)’ before ‘;’ token

I am putting a #if !defined(KOKKOS_IMPL_CUDA_VERSION_9_WORKAROUND) in as a workaround.