Fix detection of same matrices when both matrices are not handled by extract_data.

1 files changed, 2 insertions, 1 deletions

diff --git a/Eigen/src/Core/TriangularMatrix.h b/Eigen/src/Core/TriangularMatrix.h
index e6d137e40..fafc2a0c6 100644
--- a/Eigen/src/Core/TriangularMatrix.h
+++ b/Eigen/src/Core/TriangularMatrix.h
@@ -532,7 +532,8 @@ template<typename _MatrixType, unsigned int _Mode> class TriangularViewImpl<_Mat
     template<typename RhsType, typename DstType>
     EIGEN_DEVICE_FUNC
     EIGEN_STRONG_INLINE void _solve_impl(const RhsType &rhs, DstType &dst) const {
-      if(!(internal::is_same<RhsType,DstType>::value && internal::extract_data(dst) == internal::extract_data(rhs)))
+      const typename DstType::Scalar *dst_data = internal::extract_data(dst);
+      if(!(internal::is_same<RhsType,DstType>::value && dst_data!=0 && dst_data == internal::extract_data(rhs)))
         dst = rhs;
       this->solveInPlace(dst);
     }