From b3ad796d4087ca768452d1bbe0555a85cd7e1dde Mon Sep 17 00:00:00 2001
From: Gael Guennebaud <g.gael@free.fr>
Date: Mon, 20 Jul 2009 10:44:07 +0200
Subject: [PATCH] bugfix in operator*= (matrix product)

---
 Eigen/src/Core/Product.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/Eigen/src/Core/Product.h b/Eigen/src/Core/Product.h
index 05a8221ee..52fb0db2c 100644
--- a/Eigen/src/Core/Product.h
+++ b/Eigen/src/Core/Product.h
@@ -300,7 +300,7 @@ template<typename OtherDerived>
 inline Derived &
 MatrixBase<Derived>::operator*=(const MatrixBase<OtherDerived> &other)
 {
-  return *this = *this * other;
+  return derived() = derived() * other.derived();
 }
 
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