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bug #1003: assert in MapBase if the provided pointer is not aligned on scalar while it is expected to be. Also add a EIGEN_ALIGN8 macro.

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This commit is contained in:
Gael Guennebaud 2015-06-09 17:42:09 +02:00
parent 51ab034f63
commit 97119f854f
2 changed files with 4 additions and 1 deletions
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4
Eigen/src/Core/MapBase.h
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@ -156,8 +156,10 @@ template<typename Derived> class MapBase<Derived, ReadOnlyAccessors>
EIGEN_STATIC_ASSERT(EIGEN_IMPLIES(internal::traits<Derived>::Flags&PacketAccessBit, EIGEN_STATIC_ASSERT(EIGEN_IMPLIES(internal::traits<Derived>::Flags&PacketAccessBit,
internal::inner_stride_at_compile_time<Derived>::ret==1), internal::inner_stride_at_compile_time<Derived>::ret==1),
PACKET_ACCESS_REQUIRES_TO_HAVE_INNER_STRIDE_FIXED_TO_1); PACKET_ACCESS_REQUIRES_TO_HAVE_INNER_STRIDE_FIXED_TO_1);
eigen_assert(EIGEN_IMPLIES(internal::packet_traits<Scalar>::AlignedOnScalar, (size_t(m_data) % sizeof(Scalar)) == 0)
&& "input pointer is not aligned on scalar boundary, e.g., use \"EIGEN_ALIGN8 T ptr[N];\" for double or complex<float>");
eigen_assert(EIGEN_IMPLIES(internal::traits<Derived>::Flags&AlignedBit, (size_t(m_data) % 16) == 0) eigen_assert(EIGEN_IMPLIES(internal::traits<Derived>::Flags&AlignedBit, (size_t(m_data) % 16) == 0)
&& "data is not aligned"); && "input pointer is not aligned on a 16 byte boundary");
} }
PointerType m_data; PointerType m_data;

1
Eigen/src/Core/util/Macros.h
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@ -278,6 +278,7 @@ namespace Eigen {
#error Please tell me what is the equivalent of __attribute__((aligned(n))) for your compiler #error Please tell me what is the equivalent of __attribute__((aligned(n))) for your compiler
#endif #endif
#define EIGEN_ALIGN8 EIGEN_ALIGN_TO_BOUNDARY(8)
#define EIGEN_ALIGN16 EIGEN_ALIGN_TO_BOUNDARY(16) #define EIGEN_ALIGN16 EIGEN_ALIGN_TO_BOUNDARY(16)
#if EIGEN_ALIGN_STATICALLY #if EIGEN_ALIGN_STATICALLY