7 files changed, 28 insertions, 5 deletions
diff --git a/Eigen/src/Core/util/BlasUtil.h b/Eigen/src/Core/util/BlasUtil.h
index 4879ceae1..fc798244a 100644
--- a/Eigen/src/Core/util/BlasUtil.h
+++ b/Eigen/src/Core/util/BlasUtil.h
@@ -28,6 +28,8 @@
 // This file contains many lightweight helper classes used to
 // implement and control fast level 2 and level 3 BLAS-like routines.
 
+namespace Eigen {
+
 namespace internal {
 
 // forward declarations
@@ -272,4 +274,6 @@ template<typename T> const typename T::Scalar* extract_data(const T& m)
 
 } // end namespace internal
 
+} // end namespace Eigen
+
 #endif // EIGEN_BLASUTIL_H
diff --git a/Eigen/src/Core/util/Constants.h b/Eigen/src/Core/util/Constants.h
index d64ccb9c5..f4e6d8791 100644
--- a/Eigen/src/Core/util/Constants.h
+++ b/Eigen/src/Core/util/Constants.h
@@ -26,6 +26,8 @@
 #ifndef EIGEN_CONSTANTS_H
 #define EIGEN_CONSTANTS_H
 
+namespace Eigen {
+
 /** This value means that a quantity is not known at compile-time, and that instead the value is
   * stored in some runtime variable.
   *
@@ -444,4 +446,6 @@ struct MatrixXpr {};
 /** The type used to identify an array expression */
 struct ArrayXpr {};
 
+} // end namespace Eigen
+
 #endif // EIGEN_CONSTANTS_H
diff --git a/Eigen/src/Core/util/ForwardDeclarations.h b/Eigen/src/Core/util/ForwardDeclarations.h
index 9f5fbc9f6..e5303f052 100644
--- a/Eigen/src/Core/util/ForwardDeclarations.h
+++ b/Eigen/src/Core/util/ForwardDeclarations.h
@@ -26,6 +26,7 @@
 #ifndef EIGEN_FORWARDDECLARATIONS_H
 #define EIGEN_FORWARDDECLARATIONS_H
 
+namespace Eigen {
 namespace internal {
 
 template<typename T> struct traits;
@@ -307,4 +308,6 @@ template<typename MatrixType, unsigned int Mode> struct eigen2_part_return_type;
 }
 #endif
 
+} // end namespace Eigen
+
 #endif // EIGEN_FORWARDDECLARATIONS_H
diff --git a/Eigen/src/Core/util/Memory.h b/Eigen/src/Core/util/Memory.h
index 7134d245b..4827615b0 100644
--- a/Eigen/src/Core/util/Memory.h
+++ b/Eigen/src/Core/util/Memory.h
@@ -80,6 +80,8 @@
   #define EIGEN_HAS_MM_MALLOC 0
 #endif
 
+namespace Eigen {
+
 namespace internal {
 
 inline void throw_std_bad_alloc()
@@ -504,8 +506,6 @@ template<typename T> struct smart_copy_helper<T,false> {
 };
 
 
-} // end namespace internal
-
 /*****************************************************************************
 *** Implementation of runtime stack allocation (falling back to malloc)    ***
 *****************************************************************************/
@@ -520,8 +520,6 @@ template<typename T> struct smart_copy_helper<T,false> {
   #endif
 #endif
 
-namespace internal {
-
 // This helper class construct the allocated memory, and takes care of destructing and freeing the handled data
 // at destruction time. In practice this helper class is mainly useful to avoid memory leak in case of exceptions.
 template<typename T> class aligned_stack_memory_handler
@@ -552,7 +550,7 @@ template<typename T> class aligned_stack_memory_handler
     bool m_deallocate;
 };
 
-}
+} // end namespace internal
 
 /** \internal
   * Declares, allocates and construct an aligned buffer named NAME of SIZE elements of type TYPE on the stack
@@ -955,4 +953,6 @@ inline int queryTopLevelCacheSize()
 
 } // end namespace internal
 
+} // end namespace Eigen
+
 #endif // EIGEN_MEMORY_H
diff --git a/Eigen/src/Core/util/Meta.h b/Eigen/src/Core/util/Meta.h
index 22fbd30b8..7ece430ac 100644
--- a/Eigen/src/Core/util/Meta.h
+++ b/Eigen/src/Core/util/Meta.h
@@ -26,6 +26,8 @@
 #ifndef EIGEN_META_H
 #define EIGEN_META_H
 
+namespace Eigen {
+
 namespace internal {
 
 /** \internal
@@ -224,4 +226,6 @@ template<typename T, int S> struct is_diagonal<DiagonalMatrix<T,S> >
 
 } // end namespace internal
 
+} // end namespace Eigen
+
 #endif // EIGEN_META_H
diff --git a/Eigen/src/Core/util/StaticAssert.h b/Eigen/src/Core/util/StaticAssert.h
index 5bb526803..9a5dbbbf3 100644
--- a/Eigen/src/Core/util/StaticAssert.h
+++ b/Eigen/src/Core/util/StaticAssert.h
@@ -48,6 +48,8 @@
 
   #else // not CXX0X
 
+    namespace Eigen {
+
     namespace internal {
 
     template<bool condition>
@@ -108,6 +110,8 @@
 
     } // end namespace internal
 
+    } // end namespace Eigen
+
     // Specialized implementation for MSVC to avoid "conditional
     // expression is constant" warnings.  This implementation doesn't
     // appear to work under GCC, hence the multiple implementations.
diff --git a/Eigen/src/Core/util/XprHelper.h b/Eigen/src/Core/util/XprHelper.h
index ba1c4379d..5bb0a624f 100644
--- a/Eigen/src/Core/util/XprHelper.h
+++ b/Eigen/src/Core/util/XprHelper.h
@@ -37,6 +37,8 @@
   #define EIGEN_EMPTY_STRUCT_CTOR(X)
 #endif
 
+namespace Eigen {
+
 typedef EIGEN_DEFAULT_DENSE_INDEX_TYPE DenseIndex;
 
 namespace internal {
@@ -455,4 +457,6 @@ struct is_lvalue
 
 } // end namespace internal
 
+} // end namespace Eigen
+
 #endif // EIGEN_XPRHELPER_H