From cc6159743d6d7deb8982b7795379d1b8e9b351f9 Mon Sep 17 00:00:00 2001
From: Gael Guennebaud <g.gael@free.fr>
Date: Wed, 28 Jan 2009 20:53:27 +0000
Subject: [PATCH] make dot() honor EvalBeforeNestingBit

---
 Eigen/src/Core/Dot.h | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/Eigen/src/Core/Dot.h b/Eigen/src/Core/Dot.h
index 5838af70d..e165a841b 100644
--- a/Eigen/src/Core/Dot.h
+++ b/Eigen/src/Core/Dot.h
@@ -266,7 +266,10 @@ MatrixBase<Derived>::dot(const MatrixBase<OtherDerived>& other) const
 
   ei_assert(size() == other.size());
 
-  return ei_dot_impl<Derived, OtherDerived>::run(derived(), other.derived());
+  // dot() must honor EvalBeforeNestingBit (eg: v.dot(M*v) )
+  typedef typename ei_cleantype<typename Derived::Nested>::type ThisNested;
+  typedef typename ei_cleantype<typename OtherDerived::Nested>::type OtherNested;
+  return ei_dot_impl<ThisNested, OtherNested>::run(derived(), other.derived());
 }
 
 /** \returns the squared \em l2 norm of *this, i.e., for vectors, the dot product of *this with itself.