diff --git a/Eigen/src/Core/Matrix.h b/Eigen/src/Core/Matrix.h
index d16cae031..893b765ef 100644
--- a/Eigen/src/Core/Matrix.h
+++ b/Eigen/src/Core/Matrix.h
@@ -25,6 +25,8 @@
 #ifndef EIGEN_MATRIX_H
 #define EIGEN_MATRIX_H
 
+struct ei_select_matrix_constructor_doing_absolutely_nothing {};
+
 /** \class Matrix
   *
   * \brief The matrix class, also used for vectors and row-vectors
@@ -131,6 +133,8 @@ class Matrix
 
   protected:
     ei_matrix_storage<Scalar, MaxSizeAtCompileTime, RowsAtCompileTime, ColsAtCompileTime, Options> m_storage;
+    Matrix(ei_select_matrix_constructor_doing_absolutely_nothing) // this ctor does not even do an assertion
+      : m_storage(ei_select_matrix_storage_constructor_doing_absolutely_nothing) {}
 
   public:
     enum { NeedsToAlign = (Options&AutoAlign) == AutoAlign
diff --git a/Eigen/src/Core/MatrixStorage.h b/Eigen/src/Core/MatrixStorage.h
index 9806dc6b2..b02c47a60 100644
--- a/Eigen/src/Core/MatrixStorage.h
+++ b/Eigen/src/Core/MatrixStorage.h
@@ -26,6 +26,9 @@
 #ifndef EIGEN_MATRIXSTORAGE_H
 #define EIGEN_MATRIXSTORAGE_H
 
+struct ei_select_matrix_storage_constructor_doing_absolutely_nothing {};
+struct ei_select_matrix_array_constructor_doing_absolutely_nothing {};
+
 /** \internal
   * Static array automatically aligned if the total byte size is a multiple of 16 and the matrix options require auto alignment
   */
@@ -42,6 +45,8 @@ template <typename T, int Size, int MatrixOptions,
               && "this assertion is explained here: http://eigen.tuxfamily.org/api/UnalignedArrayAssert.html  **** READ THIS WEB PAGE !!! ****");
     #endif
   }
+
+  ei_matrix_array(ei_select_matrix_array_constructor_doing_absolutely_nothing) {}
 };
 
 template <typename T, int Size, int MatrixOptions> struct ei_matrix_array<T,Size,MatrixOptions,false>
@@ -68,6 +73,8 @@ template<typename T, int Size, int _Rows, int _Cols, int _Options> class ei_matr
     ei_matrix_array<T,Size,_Options> m_data;
   public:
     inline explicit ei_matrix_storage() {}
+    inline ei_matrix_storage(ei_select_matrix_storage_constructor_doing_absolutely_nothing)
+      : m_data(ei_select_matrix_array_constructor_doing_absolutely_nothing) {}
     inline ei_matrix_storage(int,int,int) {}
     inline void swap(ei_matrix_storage& other) { std::swap(m_data,other.m_data); }
     inline static int rows(void) {return _Rows;}
@@ -85,6 +92,8 @@ template<typename T, int Size, int _Options> class ei_matrix_storage<T, Size, Dy
     int m_cols;
   public:
     inline explicit ei_matrix_storage() : m_rows(0), m_cols(0) {}
+    inline ei_matrix_storage(ei_select_matrix_storage_constructor_doing_absolutely_nothing)
+      : m_data(ei_select_matrix_array_constructor_doing_absolutely_nothing) {}
     inline ei_matrix_storage(int, int rows, int cols) : m_rows(rows), m_cols(cols) {}
     inline ~ei_matrix_storage() {}
     inline void swap(ei_matrix_storage& other)
@@ -107,6 +116,8 @@ template<typename T, int Size, int _Cols, int _Options> class ei_matrix_storage<
     int m_rows;
   public:
     inline explicit ei_matrix_storage() : m_rows(0) {}
+    inline ei_matrix_storage(ei_select_matrix_storage_constructor_doing_absolutely_nothing)
+      : m_data(ei_select_matrix_array_constructor_doing_absolutely_nothing) {}
     inline ei_matrix_storage(int, int rows, int) : m_rows(rows) {}
     inline ~ei_matrix_storage() {}
     inline void swap(ei_matrix_storage& other) { std::swap(m_data,other.m_data); std::swap(m_rows,other.m_rows); }
@@ -127,6 +138,8 @@ template<typename T, int Size, int _Rows, int _Options> class ei_matrix_storage<
     int m_cols;
   public:
     inline explicit ei_matrix_storage() : m_cols(0) {}
+    inline ei_matrix_storage(ei_select_matrix_storage_constructor_doing_absolutely_nothing)
+      : m_data(ei_select_matrix_array_constructor_doing_absolutely_nothing) {}
     inline ei_matrix_storage(int, int, int cols) : m_cols(cols) {}
     inline ~ei_matrix_storage() {}
     inline void swap(ei_matrix_storage& other) { std::swap(m_data,other.m_data); std::swap(m_cols,other.m_cols); }
@@ -148,6 +161,8 @@ template<typename T, int _Options> class ei_matrix_storage<T, Dynamic, Dynamic,
     int m_cols;
   public:
     inline explicit ei_matrix_storage() : m_data(0), m_rows(0), m_cols(0) {}
+    inline ei_matrix_storage(ei_select_matrix_storage_constructor_doing_absolutely_nothing)
+      : m_data(ei_select_matrix_array_constructor_doing_absolutely_nothing) {}
     inline ei_matrix_storage(int size, int rows, int cols)
       : m_data(ei_aligned_new<T>(size)), m_rows(rows), m_cols(cols) {}
     inline ~ei_matrix_storage() { ei_aligned_delete(m_data, m_rows*m_cols); }
@@ -176,6 +191,8 @@ template<typename T, int _Rows, int _Options> class ei_matrix_storage<T, Dynamic
     int m_cols;
   public:
     inline explicit ei_matrix_storage() : m_data(0), m_cols(0) {}
+    inline ei_matrix_storage(ei_select_matrix_storage_constructor_doing_absolutely_nothing)
+      : m_data(ei_select_matrix_array_constructor_doing_absolutely_nothing) {}
     inline ei_matrix_storage(int size, int, int cols) : m_data(ei_aligned_new<T>(size)), m_cols(cols) {}
     inline ~ei_matrix_storage() { ei_aligned_delete(m_data, _Rows*m_cols); }
     inline void swap(ei_matrix_storage& other) { std::swap(m_data,other.m_data); std::swap(m_cols,other.m_cols); }
@@ -201,6 +218,8 @@ template<typename T, int _Cols, int _Options> class ei_matrix_storage<T, Dynamic
     int m_rows;
   public:
     inline explicit ei_matrix_storage() : m_data(0), m_rows(0) {}
+    inline ei_matrix_storage(ei_select_matrix_storage_constructor_doing_absolutely_nothing)
+      : m_data(ei_select_matrix_array_constructor_doing_absolutely_nothing) {}
     inline ei_matrix_storage(int size, int rows, int) : m_data(ei_aligned_new<T>(size)), m_rows(rows) {}
     inline ~ei_matrix_storage() { ei_aligned_delete(m_data, _Cols*m_rows); }
     inline void swap(ei_matrix_storage& other) { std::swap(m_data,other.m_data); std::swap(m_rows,other.m_rows); }
diff --git a/Eigen/src/Core/util/Memory.h b/Eigen/src/Core/util/Memory.h
index 4a60da58b..e833d4294 100644
--- a/Eigen/src/Core/util/Memory.h
+++ b/Eigen/src/Core/util/Memory.h
@@ -293,8 +293,8 @@ inline static int ei_alignmentOffset(const Scalar* ptr, int maxOffset)
     void *operator new[](size_t size) throw() { \
       return Eigen::ei_conditional_aligned_malloc<NeedsToAlign>(size); \
     } \
-    void operator delete(void * ptr) { Eigen::ei_aligned_free(ptr); } \
-    void operator delete[](void * ptr) { Eigen::ei_aligned_free(ptr); } \
+    void operator delete(void * ptr) { Eigen::ei_conditinal_aligned_free<NeedsToAlign>(ptr); } \
+    void operator delete[](void * ptr) { Eigen::ei_conditinal_aligned_free<NeedsToAlign>(ptr); } \
     EIGEN_WORKAROUND_FOR_QT_BUG_CALLING_WRONG_OPERATOR_NEW
 
 #define EIGEN_MAKE_ALIGNED_OPERATOR_NEW EIGEN_MAKE_ALIGNED_OPERATOR_NEW_IF(true)