bug fix in gemv:

solution always use a temporary in dst.innerStride != 1
even though this is not needed when packet_size == 1....

1 files changed, 3 insertions, 2 deletions

diff --git a/Eigen/src/Core/Product.h b/Eigen/src/Core/Product.h
index 7e68a5724..18aaba341 100644
--- a/Eigen/src/Core/Product.h
+++ b/Eigen/src/Core/Product.h
@@ -330,9 +330,10 @@ template<> struct ei_gemv_selector<OnTheRight,ColMajor,true>
                                * RhsBlasTraits::extractScalarFactor(prod.rhs());
 
     enum {
-      EvalToDest = (ei_packet_traits<Scalar>::size==1)
-                 ||((Dest::Flags&ActualPacketAccessBit) && (!(Dest::Flags & RowMajorBit)))
+      // FIXME find a way to allow an inner stride on the result if ei_packet_traits<Scalar>::size==1
+      EvalToDest = (Dest::Flags&ActualPacketAccessBit) && (Dest::InnerStrideAtCompileTime==1)
     };
+
     Scalar* EIGEN_RESTRICT actualDest;
     if (EvalToDest)
       actualDest = &dest.coeffRef(0);