From 72044ca9259ca5242d971362d0f88ea9ce9df6cc Mon Sep 17 00:00:00 2001
From: Benoit Jacob <jacob.benoit.1@gmail.com>
Date: Thu, 21 Jan 2010 23:33:20 -0500
Subject: [PATCH] fix a super nasty bug: on row-major expressions that are NOT
 vectors but that do have LinearAccess, the MapBase::coeff(int) and
 MapBase::coeffRef(int) methods were broken.

---
 Eigen/src/Core/MapBase.h | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/Eigen/src/Core/MapBase.h b/Eigen/src/Core/MapBase.h
index e79748e7d..72c208bc2 100644
--- a/Eigen/src/Core/MapBase.h
+++ b/Eigen/src/Core/MapBase.h
@@ -99,7 +99,7 @@ template<typename Derived> class MapBase
     inline const Scalar coeff(int index) const
     {
       ei_assert(Derived::IsVectorAtCompileTime || (ei_traits<Derived>::Flags & LinearAccessBit));
-      if ( ((RowsAtCompileTime == 1) == IsRowMajor) )
+      if ( ((RowsAtCompileTime == 1) == IsRowMajor) || !int(Derived::IsVectorAtCompileTime) )
         return m_data[index];
       else
         return m_data[index*stride()];
@@ -108,7 +108,7 @@ template<typename Derived> class MapBase
     inline Scalar& coeffRef(int index)
     {
       ei_assert(Derived::IsVectorAtCompileTime || (ei_traits<Derived>::Flags & LinearAccessBit));
-      if ( ((RowsAtCompileTime == 1) == IsRowMajor) )
+      if ( ((RowsAtCompileTime == 1) == IsRowMajor)  || !int(Derived::IsVectorAtCompileTime) )
         return const_cast<Scalar*>(m_data)[index];
       else
         return const_cast<Scalar*>(m_data)[index*stride()];