From 3a735a6cf17db3f7aab0eee34412d3b711e64044 Mon Sep 17 00:00:00 2001
From: Gael Guennebaud <g.gael@free.fr>
Date: Wed, 19 Feb 2014 13:17:41 +0100
Subject: [PATCH] Fix lazy evaluation in Ref

---
 Eigen/src/Core/Ref.h | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/Eigen/src/Core/Ref.h b/Eigen/src/Core/Ref.h
index ce9e82913..665b7497a 100644
--- a/Eigen/src/Core/Ref.h
+++ b/Eigen/src/Core/Ref.h
@@ -239,7 +239,11 @@ template<typename TPlainObjectType, int Options, typename StrideType> class Ref<
     template<typename Expression>
     void construct(const Expression& expr, internal::false_type)
     {
+#ifdef EIGEN_TEST_EVALUATORS
+      internal::call_assignment_no_alias(m_object,expr,internal::assign_op<Scalar>());
+#else
       m_object.lazyAssign(expr);
+#endif
       Base::construct(m_object);
     }