From 722916e19d86b224ec6c705e24d376def524154b Mon Sep 17 00:00:00 2001
From: Gael Guennebaud <g.gael@free.fr>
Date: Thu, 6 Nov 2014 09:25:26 +0100
Subject: bug #903: clean swap API regarding extra enable_if parameters, and
 add failtests for swap

---
 Eigen/src/Core/Ref.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

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

diff --git a/Eigen/src/Core/Ref.h b/Eigen/src/Core/Ref.h
index bc7ce9a14..6e6adbd31 100644
--- a/Eigen/src/Core/Ref.h
+++ b/Eigen/src/Core/Ref.h
@@ -208,7 +208,7 @@ template<typename PlainObjectType, int Options, typename StrideType> class Ref
     {
       EIGEN_STATIC_ASSERT(bool(internal::is_lvalue<Derived>::value), THIS_EXPRESSION_IS_NOT_A_LVALUE__IT_IS_READ_ONLY);
       EIGEN_STATIC_ASSERT(bool(Traits::template match<Derived>::MatchAtCompileTime), STORAGE_LAYOUT_DOES_NOT_MATCH);
-      enum { THIS_EXPRESSION_IS_NOT_A_LVALUE__IT_IS_READ_ONLY = Derived::ThisConstantIsPrivateInPlainObjectBase};
+      EIGEN_STATIC_ASSERT(!Derived::IsPlainObjectBase,THIS_EXPRESSION_IS_NOT_A_LVALUE__IT_IS_READ_ONLY);
       Base::construct(expr.const_cast_derived());
     }
 
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