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Fix mem concepts non-copyable pitch test #6

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Fix mem concepts non-copyable pitch test #6

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6 changes: 4 additions & 2 deletions test/unit/mem/concepts.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -216,14 +216,16 @@ TEST_CASE(
"test return value type of the access operator for alpaka::concepts::IDataSource and IMdSpan",
"[mem][concept]")
{
// the test is motivate by creating a MdSpan<std::atomic<int>>
// This regression test models element types such as std::atomic<int>:
// access must still work by reference even when the element type is not copyable.
// The pitch vector has to be computed from the same element type used by MdSpan.
NonCopyStruct mcs;

STATIC_REQUIRE_FALSE(std::convertible_to<NonCopyStruct, NonCopyStruct>);
STATIC_REQUIRE(std::convertible_to<NonCopyStruct&, NonCopyStruct&>);

concepts::Vector auto const extents = Vec{1u};
concepts::Vector auto const pitches = alpaka::calculatePitchesFromExtents<int>(extents);
concepts::Vector auto const pitches = alpaka::calculatePitchesFromExtents<NonCopyStruct>(extents);

alpaka::MdSpan mdspan(&mcs, extents, pitches);

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