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MSVC runs into problems when a forward declaration is using a different template type name than the actual declaration.

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This fixes the recent issues we observed on MSVC systems.
This commit is contained in:
Hauke Heibel 2010-04-22 13:56:06 +02:00
parent 28dde19e40
commit 27a4a748cb
1 changed files with 4 additions and 4 deletions
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8
Eigen/src/Core/util/ForwardDeclarations.h
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@ -54,13 +54,13 @@ template<typename MatrixType> class Minor;
// is used as default template parameter value here, it gets mis-evaluated as just ei_traits<MatrixType>::Flags
// Moreover, adding brackets tends to give compilation errors with MSVC.
// Solution: defer that to a helper struct.
template<typename MatrixType>
template<typename XprType>
struct ei_block_direct_access_status
{
enum { ret = ei_traits<MatrixType>::Flags&DirectAccessBit ? HasDirectAccess : NoDirectAccess };
enum { ret = ei_traits<XprType>::Flags&DirectAccessBit ? HasDirectAccess : NoDirectAccess };
};
template<typename MatrixType, int BlockRows=Dynamic, int BlockCols=Dynamic,
int _DirectAccessStatus = ei_block_direct_access_status<MatrixType>::ret> class Block;
template<typename XprType, int BlockRows=Dynamic, int BlockCols=Dynamic,
int _DirectAccessStatus = ei_block_direct_access_status<XprType>::ret> class Block;
template<typename MatrixType, int Size=Dynamic> class VectorBlock;
template<typename MatrixType> class Transpose;