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bug #1046: add unit tests for correct propagation of alignment through std::alignment_of

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This commit is contained in:
Gael Guennebaud 2019-02-19 10:31:56 +01:00
parent 7580112c31
commit 7d10c78738
1 changed files with 32 additions and 1 deletions
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31
test/dense_storage.cpp
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@ -52,6 +52,32 @@ void dense_storage_assignment()
VERIFY_IS_EQUAL(raw_reference[i], raw_copied_reference[i]);
}
template<typename T, int Size, std::size_t Alignment>
void dense_storage_alignment()
{
#if EIGEN_HAS_ALIGNAS
struct alignas(Alignment) Empty1 {};
VERIFY_IS_EQUAL(std::alignment_of<Empty1>::value, Alignment);
struct EIGEN_ALIGN_TO_BOUNDARY(Alignment) Empty2 {};
VERIFY_IS_EQUAL(std::alignment_of<Empty2>::value, Alignment);
struct Nested1 { EIGEN_ALIGN_TO_BOUNDARY(Alignment) T data[Size]; };
VERIFY_IS_EQUAL(std::alignment_of<Nested1>::value, Alignment);
VERIFY_IS_EQUAL( (std::alignment_of<internal::plain_array<T,Size,AutoAlign,Alignment> >::value), Alignment);
const std::size_t default_alignment = internal::compute_default_alignment<T,Size>::value;
VERIFY_IS_EQUAL( (std::alignment_of<DenseStorage<T,Size,1,1,AutoAlign> >::value), default_alignment);
VERIFY_IS_EQUAL( (std::alignment_of<Matrix<T,Size,1,AutoAlign> >::value), default_alignment);
struct Nested2 { Matrix<T,Size,1,AutoAlign> mat; };
VERIFY_IS_EQUAL(std::alignment_of<Nested2>::value, default_alignment);
#endif
}
EIGEN_DECLARE_TEST(dense_storage)
{
dense_storage_copy<int,Dynamic,Dynamic>();
@ -73,4 +99,9 @@ EIGEN_DECLARE_TEST(dense_storage)
dense_storage_assignment<float,Dynamic,3>();
dense_storage_assignment<float,4,Dynamic>();
dense_storage_assignment<float,4,3>();
dense_storage_alignment<float,16,8>();
dense_storage_alignment<float,16,16>();
dense_storage_alignment<float,16,32>();
dense_storage_alignment<float,16,64>();
}