From 8b3fc31b55e95b2c6eafa2e59483acc3557af9ff Mon Sep 17 00:00:00 2001
From: klimpel <anonymous@invalid.net>
Date: Mon, 11 Jul 2016 17:42:22 +0200
Subject: [PATCH] compile fix (SFINAE variant apparently didn't work for all
 compilers) for the following compiler/platform: gcc (GCC) 4.1.2 20080704 (Red
 Hat 4.1.2-46) Copyright (C) 2006 Free Software Foundation, Inc.

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

diff --git a/Eigen/src/SparseCore/SparseProduct.h b/Eigen/src/SparseCore/SparseProduct.h
index 84e69903b..7a5ad0635 100644
--- a/Eigen/src/SparseCore/SparseProduct.h
+++ b/Eigen/src/SparseCore/SparseProduct.h
@@ -45,7 +45,7 @@ struct generic_product_impl<Lhs, Rhs, SparseShape, SparseShape, ProductType>
 
   // dense += sparse * sparse
   template<typename Dest,typename ActualLhs>
-  static void addTo(Dest& dst, const ActualLhs& lhs, const Rhs& rhs, int* = typename enable_if<is_same<typename evaluator_traits<Dest>::Shape,DenseShape>::value,int*>::type(0) )
+  static void addTo(Dest& dst, const ActualLhs& lhs, const Rhs& rhs, typename enable_if<is_same<typename evaluator_traits<Dest>::Shape,DenseShape>::value,int*>::type* = 0)
   {
     typedef typename nested_eval<ActualLhs,Dynamic>::type LhsNested;
     typedef typename nested_eval<Rhs,Dynamic>::type RhsNested;
@@ -57,7 +57,7 @@ struct generic_product_impl<Lhs, Rhs, SparseShape, SparseShape, ProductType>
 
   // dense -= sparse * sparse
   template<typename Dest>
-  static void subTo(Dest& dst, const Lhs& lhs, const Rhs& rhs, int* = typename enable_if<is_same<typename evaluator_traits<Dest>::Shape,DenseShape>::value,int*>::type(0) )
+  static void subTo(Dest& dst, const Lhs& lhs, const Rhs& rhs, typename enable_if<is_same<typename evaluator_traits<Dest>::Shape,DenseShape>::value,int*>::type* = 0)
   {
     addTo(dst, -lhs, rhs);
   }