From 547269da3560518807efe902bce07d22db03e039 Mon Sep 17 00:00:00 2001
From: Benoit Jacob <jacob.benoit.1@gmail.com>
Date: Fri, 19 Mar 2010 02:12:23 -0400
Subject: fix the flags and matrix options, to always have the right RowMajor
 bit in the vector case

---
 Eigen/src/Core/ProductBase.h | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

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

diff --git a/Eigen/src/Core/ProductBase.h b/Eigen/src/Core/ProductBase.h
index 789aecfb6..be32189e1 100644
--- a/Eigen/src/Core/ProductBase.h
+++ b/Eigen/src/Core/ProductBase.h
@@ -42,8 +42,10 @@ struct ei_traits<ProductBase<Derived,_Lhs,_Rhs> > //: ei_traits<typename ei_clea
     ColsAtCompileTime = ei_traits<Rhs>::ColsAtCompileTime,
     MaxRowsAtCompileTime = ei_traits<Lhs>::MaxRowsAtCompileTime,
     MaxColsAtCompileTime = ei_traits<Rhs>::MaxColsAtCompileTime,
-    Flags = EvalBeforeNestingBit | EvalBeforeAssigningBit | NestByRefBit, // Note that EvalBeforeNestingBit and NestByRefBit
-                                                                          // are not used in practice because ei_nested is overloaded for products
+    Flags = (RowsAtCompileTime==1 ? RowMajorBit : 0)
+          | EvalBeforeNestingBit | EvalBeforeAssigningBit | NestByRefBit,
+                  // Note that EvalBeforeNestingBit and NestByRefBit
+                  // are not used in practice because ei_nested is overloaded for products
     CoeffReadCost = 0 // FIXME why is it needed ?
   };
 };
-- 
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