From d6c8366d843b88aa1feb7b688cf4f8b1fe8125aa Mon Sep 17 00:00:00 2001
From: Gael Guennebaud <g.gael@free.fr>
Date: Fri, 2 Sep 2016 15:23:32 +0200
Subject: Fix compilation with MSVC 2012

---
 Eigen/src/Core/util/Meta.h | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

(limited to 'Eigen/src/Core/util/Meta.h')

diff --git a/Eigen/src/Core/util/Meta.h b/Eigen/src/Core/util/Meta.h
index 2d5cacffb..bbef83ea8 100755
--- a/Eigen/src/Core/util/Meta.h
+++ b/Eigen/src/Core/util/Meta.h
@@ -386,7 +386,7 @@ template<typename T> const T& return_ref();
 template <typename T>
 struct has_nullary_operator
 {
-  template <typename C> static meta_yes testFunctor(C const *,typename enable_if<(sizeof(return_ref<C>()())>0)>::type * = 0);
+  template <typename C> static meta_yes testFunctor(C const *,typename enable_if<(sizeof(return_ref<C>().operator()())>0)>::type * = 0);
   static meta_no testFunctor(...);
 
   enum { value = sizeof(testFunctor(static_cast<T*>(0))) == sizeof(meta_yes) };
@@ -395,7 +395,7 @@ struct has_nullary_operator
 template <typename T>
 struct has_unary_operator
 {
-  template <typename C> static meta_yes testFunctor(C const *,typename enable_if<(sizeof(return_ref<C>()(Index(0)))>0)>::type * = 0);
+  template <typename C> static meta_yes testFunctor(C const *,typename enable_if<(sizeof(return_ref<C>().operator()(Index(0)))>0)>::type * = 0);
   static meta_no testFunctor(...);
 
   enum { value = sizeof(testFunctor(static_cast<T*>(0))) == sizeof(meta_yes) };
@@ -404,7 +404,7 @@ struct has_unary_operator
 template <typename T>
 struct has_binary_operator
 {
-  template <typename C> static meta_yes testFunctor(C const *,typename enable_if<(sizeof(return_ref<C>()(Index(0),Index(0)))>0)>::type * = 0);
+  template <typename C> static meta_yes testFunctor(C const *,typename enable_if<(sizeof(return_ref<C>().operator()(Index(0),Index(0)))>0)>::type * = 0);
   static meta_no testFunctor(...);
 
   enum { value = sizeof(testFunctor(static_cast<T*>(0))) == sizeof(meta_yes) };
-- 
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