From bbdfe42628cc324904a49d472230c8cbbfd9e1d5 Mon Sep 17 00:00:00 2001
From: Stanislaw Halik <sthalik@misaki.pl>
Date: Wed, 16 Jan 2019 11:45:13 +0100
Subject: update eigen

---
 eigen/unsupported/Eigen/src/AutoDiff/AutoDiffScalar.h | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

(limited to 'eigen/unsupported/Eigen/src/AutoDiff')

diff --git a/eigen/unsupported/Eigen/src/AutoDiff/AutoDiffScalar.h b/eigen/unsupported/Eigen/src/AutoDiff/AutoDiffScalar.h
index 279fe5c..2f50e99 100644
--- a/eigen/unsupported/Eigen/src/AutoDiff/AutoDiffScalar.h
+++ b/eigen/unsupported/Eigen/src/AutoDiff/AutoDiffScalar.h
@@ -534,7 +534,8 @@ struct ScalarBinaryOpTraits<typename DerType::Scalar,AutoDiffScalar<DerType>, Bi
   EIGEN_EXPR_BINARYOP_SCALAR_RETURN_TYPE(typename Eigen::internal::remove_all<DerType>::type, typename Eigen::internal::traits<typename Eigen::internal::remove_all<DerType>::type>::Scalar, product) > \
   FUNC(const Eigen::AutoDiffScalar<DerType>& x) { \
     using namespace Eigen; \
-    EIGEN_UNUSED typedef typename Eigen::internal::traits<typename Eigen::internal::remove_all<DerType>::type>::Scalar Scalar; \
+    typedef typename Eigen::internal::traits<typename Eigen::internal::remove_all<DerType>::type>::Scalar Scalar; \
+    EIGEN_UNUSED_VARIABLE(sizeof(Scalar)); \
     CODE; \
   }
 
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