diff --git a/unsupported/Eigen/CXX11/src/Core/util/CXX11Meta.h b/unsupported/Eigen/CXX11/src/Core/util/CXX11Meta.h
index c1c57041f..4d99f786c 100644
--- a/unsupported/Eigen/CXX11/src/Core/util/CXX11Meta.h
+++ b/unsupported/Eigen/CXX11/src/Core/util/CXX11Meta.h
@@ -404,7 +404,7 @@ EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE t array_prod(const std::vector<t>& a) {
 template<typename Op, typename A, typename B, std::size_t N, int... n>
 constexpr inline array<decltype(Op::run(A(), B())),N> h_array_zip(array<A, N> a, array<B, N> b, numeric_list<int, n...>)
 {
-  return array<decltype(Op::run(A(), B())),N>{ Op::run(array_get<n>(a), array_get<n>(b))... };
+  return array<decltype(Op::run(A(), B())),N>{{ Op::run(array_get<n>(a), array_get<n>(b))... }};
 }
 
 template<typename Op, typename A, typename B, std::size_t N>
@@ -432,7 +432,7 @@ constexpr inline auto array_zip_and_reduce(array<A, N> a, array<B, N> b) -> decl
 template<typename Op, typename A, std::size_t N, int... n>
 constexpr inline array<decltype(Op::run(A())),N> h_array_apply(array<A, N> a, numeric_list<int, n...>)
 {
-  return array<decltype(Op::run(A())),N>{ Op::run(array_get<n>(a))... };
+  return array<decltype(Op::run(A())),N>{{ Op::run(array_get<n>(a))... }};
 }
 
 template<typename Op, typename A, std::size_t N>
diff --git a/unsupported/Eigen/CXX11/src/Tensor/Tensor.h b/unsupported/Eigen/CXX11/src/Tensor/Tensor.h
index 092e30c1f..dc6ca4909 100644
--- a/unsupported/Eigen/CXX11/src/Tensor/Tensor.h
+++ b/unsupported/Eigen/CXX11/src/Tensor/Tensor.h
@@ -119,7 +119,7 @@ class Tensor : public TensorBase<Tensor<Scalar_, NumIndices_, Options_, IndexTyp
     {
       // The number of indices used to access a tensor coefficient must be equal to the rank of the tensor.
       EIGEN_STATIC_ASSERT(sizeof...(otherIndices) + 2 == NumIndices, YOU_MADE_A_PROGRAMMING_MISTAKE)
-      return coeff(array<Index, NumIndices>{firstIndex, secondIndex, otherIndices...});
+      return coeff(array<Index, NumIndices>{{firstIndex, secondIndex, otherIndices...}});
     }
 #endif
 
@@ -159,7 +159,7 @@ class Tensor : public TensorBase<Tensor<Scalar_, NumIndices_, Options_, IndexTyp
     {
       // The number of indices used to access a tensor coefficient must be equal to the rank of the tensor.
       EIGEN_STATIC_ASSERT(sizeof...(otherIndices) + 2 == NumIndices, YOU_MADE_A_PROGRAMMING_MISTAKE)
-      return coeffRef(array<Index, NumIndices>{firstIndex, secondIndex, otherIndices...});
+      return coeffRef(array<Index, NumIndices>{{firstIndex, secondIndex, otherIndices...}});
     }
 #endif
 
@@ -199,7 +199,7 @@ class Tensor : public TensorBase<Tensor<Scalar_, NumIndices_, Options_, IndexTyp
     {
       // The number of indices used to access a tensor coefficient must be equal to the rank of the tensor.
       EIGEN_STATIC_ASSERT(sizeof...(otherIndices) + 2 == NumIndices, YOU_MADE_A_PROGRAMMING_MISTAKE)
-      return this->operator()(array<Index, NumIndices>{firstIndex, secondIndex, otherIndices...});
+      return this->operator()(array<Index, NumIndices>{{firstIndex, secondIndex, otherIndices...}});
     }
 #else
     EIGEN_DEVICE_FUNC
@@ -266,7 +266,7 @@ class Tensor : public TensorBase<Tensor<Scalar_, NumIndices_, Options_, IndexTyp
     {
       // The number of indices used to access a tensor coefficient must be equal to the rank of the tensor.
       EIGEN_STATIC_ASSERT(sizeof...(otherIndices) + 2 == NumIndices, YOU_MADE_A_PROGRAMMING_MISTAKE)
-      return operator()(array<Index, NumIndices>{firstIndex, secondIndex, otherIndices...});
+      return operator()(array<Index, NumIndices>{{firstIndex, secondIndex, otherIndices...}});
     }
 #else
     EIGEN_DEVICE_FUNC
@@ -342,7 +342,7 @@ class Tensor : public TensorBase<Tensor<Scalar_, NumIndices_, Options_, IndexTyp
 #ifdef EIGEN_HAS_VARIADIC_TEMPLATES
     template<typename... IndexTypes>
     EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE Tensor(Index firstDimension, IndexTypes... otherDimensions)
-        : m_storage(internal::array_prod(array<Index, NumIndices>{firstDimension, otherDimensions...}), array<Index, NumIndices>{firstDimension, otherDimensions...})
+        : m_storage(internal::array_prod(array<Index, NumIndices>{{firstDimension, otherDimensions...}}), array<Index, NumIndices>{{firstDimension, otherDimensions...}})
     {
       // The number of dimensions used to construct a tensor must be equal to the rank of the tensor.
       EIGEN_STATIC_ASSERT(sizeof...(otherDimensions) + 1 == NumIndices, YOU_MADE_A_PROGRAMMING_MISTAKE)
@@ -427,7 +427,7 @@ class Tensor : public TensorBase<Tensor<Scalar_, NumIndices_, Options_, IndexTyp
     {
       // The number of dimensions used to resize a tensor must be equal to the rank of the tensor.
       EIGEN_STATIC_ASSERT(sizeof...(otherDimensions) + 1 == NumIndices, YOU_MADE_A_PROGRAMMING_MISTAKE)
-      resize(array<Index, NumIndices>{firstDimension, otherDimensions...});
+      resize(array<Index, NumIndices>{{firstDimension, otherDimensions...}});
     }
 #endif
 
diff --git a/unsupported/Eigen/CXX11/src/Tensor/TensorDimensions.h b/unsupported/Eigen/CXX11/src/Tensor/TensorDimensions.h
index 06cac3570..52569a359 100644
--- a/unsupported/Eigen/CXX11/src/Tensor/TensorDimensions.h
+++ b/unsupported/Eigen/CXX11/src/Tensor/TensorDimensions.h
@@ -289,7 +289,7 @@ struct DSizes : array<DenseIndex, NumDims> {
   template<typename... IndexTypes> EIGEN_DEVICE_FUNC
   EIGEN_STRONG_INLINE explicit DSizes(DenseIndex firstDimension, IndexTypes... otherDimensions) {
     EIGEN_STATIC_ASSERT(sizeof...(otherDimensions) + 1 == NumDims, YOU_MADE_A_PROGRAMMING_MISTAKE)
-    (*this) = array<DenseIndex, NumDims>{firstDimension, otherDimensions...};
+    (*this) = array<DenseIndex, NumDims>{{firstDimension, otherDimensions...}};
   }
 #else
   EIGEN_DEVICE_FUNC explicit DSizes(const DenseIndex i0) {
diff --git a/unsupported/Eigen/CXX11/src/Tensor/TensorFixedSize.h b/unsupported/Eigen/CXX11/src/Tensor/TensorFixedSize.h
index 7d0858d02..70282dd83 100644
--- a/unsupported/Eigen/CXX11/src/Tensor/TensorFixedSize.h
+++ b/unsupported/Eigen/CXX11/src/Tensor/TensorFixedSize.h
@@ -73,7 +73,7 @@ class TensorFixedSize : public TensorBase<TensorFixedSize<Scalar_, Dimensions_,
     {
       // The number of indices used to access a tensor coefficient must be equal to the rank of the tensor.
       EIGEN_STATIC_ASSERT(sizeof...(otherIndices) + 1 == NumIndices, YOU_MADE_A_PROGRAMMING_MISTAKE)
-      return coeff(array<Index, NumIndices>{firstIndex, otherIndices...});
+      return coeff(array<Index, NumIndices>{{firstIndex, otherIndices...}});
     }
 #endif
 
@@ -105,7 +105,7 @@ class TensorFixedSize : public TensorBase<TensorFixedSize<Scalar_, Dimensions_,
     {
       // The number of indices used to access a tensor coefficient must be equal to the rank of the tensor.
       EIGEN_STATIC_ASSERT(sizeof...(otherIndices) + 1 == NumIndices, YOU_MADE_A_PROGRAMMING_MISTAKE)
-      return coeffRef(array<Index, NumIndices>{firstIndex, otherIndices...});
+      return coeffRef(array<Index, NumIndices>{{firstIndex, otherIndices...}});
     }
 #endif
 
@@ -137,7 +137,7 @@ class TensorFixedSize : public TensorBase<TensorFixedSize<Scalar_, Dimensions_,
     {
       // The number of indices used to access a tensor coefficient must be equal to the rank of the tensor.
       EIGEN_STATIC_ASSERT(sizeof...(otherIndices) + 1 == NumIndices, YOU_MADE_A_PROGRAMMING_MISTAKE)
-      return this->operator()(array<Index, NumIndices>{firstIndex, otherIndices...});
+      return this->operator()(array<Index, NumIndices>{{firstIndex, otherIndices...}});
     }
 #endif
 
@@ -176,7 +176,7 @@ class TensorFixedSize : public TensorBase<TensorFixedSize<Scalar_, Dimensions_,
     {
       // The number of indices used to access a tensor coefficient must be equal to the rank of the tensor.
       EIGEN_STATIC_ASSERT(sizeof...(otherIndices) + 1 == NumIndices, YOU_MADE_A_PROGRAMMING_MISTAKE)
-      return operator()(array<Index, NumIndices>{firstIndex, otherIndices...});
+      return operator()(array<Index, NumIndices>{{firstIndex, otherIndices...}});
     }
 #endif
 
diff --git a/unsupported/Eigen/CXX11/src/Tensor/TensorMap.h b/unsupported/Eigen/CXX11/src/Tensor/TensorMap.h
index 7233f4c89..6f69da34a 100644
--- a/unsupported/Eigen/CXX11/src/Tensor/TensorMap.h
+++ b/unsupported/Eigen/CXX11/src/Tensor/TensorMap.h
@@ -141,10 +141,10 @@ template<typename PlainObjectType, int Options_> class TensorMap : public Tensor
     {
       EIGEN_STATIC_ASSERT(sizeof...(otherIndices) + 1 == NumIndices, YOU_MADE_A_PROGRAMMING_MISTAKE)
       if (PlainObjectType::Options&RowMajor) {
-        const Index index = m_dimensions.IndexOfRowMajor(array<Index, NumIndices>{firstIndex, otherIndices...});
+        const Index index = m_dimensions.IndexOfRowMajor(array<Index, NumIndices>{{firstIndex, otherIndices...}});
         return m_data[index];
       } else {
-        const Index index = m_dimensions.IndexOfColMajor(array<Index, NumIndices>{firstIndex, otherIndices...});
+        const Index index = m_dimensions.IndexOfColMajor(array<Index, NumIndices>{{firstIndex, otherIndices...}});
         return m_data[index];
       }
     }
@@ -228,10 +228,10 @@ template<typename PlainObjectType, int Options_> class TensorMap : public Tensor
       static_assert(sizeof...(otherIndices) + 1 == NumIndices || NumIndices == Dynamic, "Number of indices used to access a tensor coefficient must be equal to the rank of the tensor.");
       const std::size_t NumDims = sizeof...(otherIndices) + 1;
       if (PlainObjectType::Options&RowMajor) {
-        const Index index = m_dimensions.IndexOfRowMajor(array<Index, NumDims>{firstIndex, otherIndices...});
+        const Index index = m_dimensions.IndexOfRowMajor(array<Index, NumDims>{{firstIndex, otherIndices...}});
         return m_data[index];
       } else {
-        const Index index = m_dimensions.IndexOfColMajor(array<Index, NumDims>{firstIndex, otherIndices...});
+        const Index index = m_dimensions.IndexOfColMajor(array<Index, NumDims>{{firstIndex, otherIndices...}});
         return m_data[index];
       }
     }
diff --git a/unsupported/Eigen/CXX11/src/TensorSymmetry/DynamicSymmetry.h b/unsupported/Eigen/CXX11/src/TensorSymmetry/DynamicSymmetry.h
index 1b9fe2779..bc4f2025f 100644
--- a/unsupported/Eigen/CXX11/src/TensorSymmetry/DynamicSymmetry.h
+++ b/unsupported/Eigen/CXX11/src/TensorSymmetry/DynamicSymmetry.h
@@ -55,7 +55,7 @@ class DynamicSGroup
     inline internal::tensor_symmetry_value_setter<Tensor_, DynamicSGroup> operator()(Tensor_& tensor, typename Tensor_::Index firstIndex, IndexTypes... otherIndices) const
     {
       static_assert(sizeof...(otherIndices) + 1 == Tensor_::NumIndices, "Number of indices used to access a tensor coefficient must be equal to the rank of the tensor.");
-      return operator()(tensor, std::array<typename Tensor_::Index, Tensor_::NumIndices>{firstIndex, otherIndices...});
+      return operator()(tensor, std::array<typename Tensor_::Index, Tensor_::NumIndices>{{firstIndex, otherIndices...}});
     }
 
     template<typename Tensor_>
@@ -90,7 +90,7 @@ class DynamicSGroup
     template<typename Index, std::size_t N, int... n>
     inline std::array<Index, N> h_permute(std::size_t which, const std::array<Index, N>& idx, internal::numeric_list<int, n...>) const
     {
-      return std::array<Index, N>{ idx[n >= m_numIndices ? n : m_elements[which].representation[n]]... };
+      return std::array<Index, N>{{ idx[n >= m_numIndices ? n : m_elements[which].representation[n]]... }};
     }
 
     template<typename Index>
diff --git a/unsupported/Eigen/CXX11/src/TensorSymmetry/StaticSymmetry.h b/unsupported/Eigen/CXX11/src/TensorSymmetry/StaticSymmetry.h
index 255c344b4..942293bd7 100644
--- a/unsupported/Eigen/CXX11/src/TensorSymmetry/StaticSymmetry.h
+++ b/unsupported/Eigen/CXX11/src/TensorSymmetry/StaticSymmetry.h
@@ -217,7 +217,7 @@ class StaticSGroup
     inline internal::tensor_symmetry_value_setter<Tensor_, StaticSGroup<Gen...>> operator()(Tensor_& tensor, typename Tensor_::Index firstIndex, IndexTypes... otherIndices) const
     {
       static_assert(sizeof...(otherIndices) + 1 == Tensor_::NumIndices, "Number of indices used to access a tensor coefficient must be equal to the rank of the tensor.");
-      return operator()(tensor, std::array<typename Tensor_::Index, Tensor_::NumIndices>{firstIndex, otherIndices...});
+      return operator()(tensor, std::array<typename Tensor_::Index, Tensor_::NumIndices>{{firstIndex, otherIndices...}});
     }
 
     template<typename Tensor_>
diff --git a/unsupported/test/cxx11_tensor_broadcasting.cpp b/unsupported/test/cxx11_tensor_broadcasting.cpp
index 6fdefd66c..2ddf47234 100644
--- a/unsupported/test/cxx11_tensor_broadcasting.cpp
+++ b/unsupported/test/cxx11_tensor_broadcasting.cpp
@@ -167,13 +167,13 @@ static void test_fixed_size_broadcasting()
   TensorFixedSize<float, Sizes<1>, DataLayout> t2;
   t2 = t2.constant(20.0f);
 
-  Tensor<float, 1, DataLayout> t3 = t1 + t2.broadcast(Eigen::array<int, 1>{10});
+  Tensor<float, 1, DataLayout> t3 = t1 + t2.broadcast(Eigen::array<int, 1>{{10}});
   for (int i = 0; i < 10; ++i) {
     VERIFY_IS_APPROX(t3(i), t1(i) + t2(0));
   }
 
-  TensorMap<TensorFixedSize<float, Sizes<1>, DataLayout> > t4(t2.data(), {1});
-  Tensor<float, 1, DataLayout> t5 = t1 + t4.broadcast(Eigen::array<int, 1>{10});
+  TensorMap<TensorFixedSize<float, Sizes<1>, DataLayout> > t4(t2.data(), {{1}});
+  Tensor<float, 1, DataLayout> t5 = t1 + t4.broadcast(Eigen::array<int, 1>{{10}});
   for (int i = 0; i < 10; ++i) {
     VERIFY_IS_APPROX(t5(i), t1(i) + t2(0));
   }
diff --git a/unsupported/test/cxx11_tensor_contraction.cpp b/unsupported/test/cxx11_tensor_contraction.cpp
index c5f3af73e..b0d52c6cf 100644
--- a/unsupported/test/cxx11_tensor_contraction.cpp
+++ b/unsupported/test/cxx11_tensor_contraction.cpp
@@ -456,7 +456,7 @@ static void test_tensor_product()
   mat1.setRandom();
   mat2.setRandom();
 
-  Tensor<float, 4, DataLayout> result = mat1.contract(mat2, Eigen::array<DimPair, 0>{});
+  Tensor<float, 4, DataLayout> result = mat1.contract(mat2, Eigen::array<DimPair, 0>{{}});
 
   VERIFY_IS_EQUAL(result.dimension(0), 2);
   VERIFY_IS_EQUAL(result.dimension(1), 3);
diff --git a/unsupported/test/cxx11_tensor_map.cpp b/unsupported/test/cxx11_tensor_map.cpp
index dc0f8a5a2..a8a095e38 100644
--- a/unsupported/test/cxx11_tensor_map.cpp
+++ b/unsupported/test/cxx11_tensor_map.cpp
@@ -130,7 +130,7 @@ static void test_3d()
   }
 
   TensorMap<Tensor<const int, 3>> mat3(mat1.data(), 2, 3, 7);
-  TensorMap<Tensor<const int, 3, RowMajor>> mat4(mat2.data(), array<DenseIndex, 3>{2, 3, 7});
+  TensorMap<Tensor<const int, 3, RowMajor>> mat4(mat2.data(), array<DenseIndex, 3>{{2, 3, 7}});
 
   VERIFY_IS_EQUAL(mat3.rank(), 3);
   VERIFY_IS_EQUAL(mat3.size(), 2*3*7);