From 2bf63c6b4a6fb9f69df184dc69f3427ffd81c4a3 Mon Sep 17 00:00:00 2001
From: Gael Guennebaud <g.gael@free.fr>
Date: Tue, 11 Mar 2014 11:42:07 +0100
Subject: Even ReturnByValue should not evaluate when assembling the expression

---
 Eigen/src/Core/ReturnByValue.h | 8 ++++++++
 1 file changed, 8 insertions(+)

(limited to 'Eigen/src/Core/ReturnByValue.h')

diff --git a/Eigen/src/Core/ReturnByValue.h b/Eigen/src/Core/ReturnByValue.h
index 7834f6cbc..d63b96138 100644
--- a/Eigen/src/Core/ReturnByValue.h
+++ b/Eigen/src/Core/ReturnByValue.h
@@ -33,6 +33,7 @@ struct traits<ReturnByValue<Derived> >
   };
 };
 
+#ifndef EIGEN_TEST_EVALUATORS
 /* The ReturnByValue object doesn't even have a coeff() method.
  * So the only way that nesting it in an expression can work, is by evaluating it into a plain matrix.
  * So internal::nested always gives the plain return matrix type.
@@ -44,6 +45,13 @@ struct nested<ReturnByValue<Derived>, n, PlainObject>
 {
   typedef typename traits<Derived>::ReturnType type;
 };
+#else
+template<typename Derived,int n,typename PlainObject>
+struct nested_eval<ReturnByValue<Derived>, n, PlainObject>
+{
+  typedef typename traits<Derived>::ReturnType type;
+};
+#endif
 
 } // end namespace internal
 
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