From da555585e27f770bad3dc85ddeaf51df5a582416 Mon Sep 17 00:00:00 2001
From: Gael Guennebaud <g.gael@free.fr>
Date: Wed, 28 Jan 2009 12:52:26 +0000
Subject: [PATCH] Patch from Frank fixing stupid MSVC internal crash

---
 Eigen/src/Core/CacheFriendlyProduct.h | 9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

diff --git a/Eigen/src/Core/CacheFriendlyProduct.h b/Eigen/src/Core/CacheFriendlyProduct.h
index 73c9730d6..f6a0b0e05 100644
--- a/Eigen/src/Core/CacheFriendlyProduct.h
+++ b/Eigen/src/Core/CacheFriendlyProduct.h
@@ -435,8 +435,13 @@ static EIGEN_DONT_INLINE void ei_cache_friendly_product_colmajor_times_vector(
     {
       /* explicit vectorization */
       // process initial unaligned coeffs
-      for (int j=0; j<alignedStart; ++j)
-        res[j] += ei_pfirst(ptmp0)*lhs0[j] + ei_pfirst(ptmp1)*lhs1[j] + ei_pfirst(ptmp2)*lhs2[j] + ei_pfirst(ptmp3)*lhs3[j];
+      for (int j=0; j<alignedStart; ++j) {
+        Scalar s = ei_pfirst(ptmp0)*lhs0[j];
+        s += ei_pfirst(ptmp1)*lhs1[j]; 
+        s += ei_pfirst(ptmp2)*lhs2[j];
+        s += ei_pfirst(ptmp3)*lhs3[j];
+        res[j] += s;
+      }
 
       if (alignedSize>alignedStart)
       {