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Fix compilation of empty products of the form: Mx0 * 0xN

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This commit is contained in:
Gael Guennebaud 2019-02-11 18:24:07 +01:00
parent eb46f34a8c
commit 2edfc6807d
1 changed files with 2 additions and 2 deletions
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4
Eigen/src/Core/GeneralProduct.h
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@ -239,7 +239,7 @@ template<> struct gemv_dense_selector<OnTheRight,ColMajor,true>
// on, the other hand it is good for the cache to pack the vector anyways...
EvalToDestAtCompileTime = (ActualDest::InnerStrideAtCompileTime==1),
ComplexByReal = (NumTraits<LhsScalar>::IsComplex) && (!NumTraits<RhsScalar>::IsComplex),
MightCannotUseDest = (!EvalToDestAtCompileTime) || ComplexByReal
MightCannotUseDest = ((!EvalToDestAtCompileTime) || ComplexByReal) && (ActualDest::MaxSizeAtCompileTime!=0)
};
typedef const_blas_data_mapper<LhsScalar,Index,ColMajor> LhsMapper;
@ -326,7 +326,7 @@ template<> struct gemv_dense_selector<OnTheRight,RowMajor,true>
enum {
// FIXME find a way to allow an inner stride on the result if packet_traits<Scalar>::size==1
// on, the other hand it is good for the cache to pack the vector anyways...
DirectlyUseRhs = ActualRhsTypeCleaned::InnerStrideAtCompileTime==1
DirectlyUseRhs = ActualRhsTypeCleaned::InnerStrideAtCompileTime==1 || ActualRhsTypeCleaned::MaxSizeAtCompileTime==0
};
gemv_static_vector_if<RhsScalar,ActualRhsTypeCleaned::SizeAtCompileTime,ActualRhsTypeCleaned::MaxSizeAtCompileTime,!DirectlyUseRhs> static_rhs;