diff --git a/test/CMakeLists.txt b/test/CMakeLists.txt
index 3cd862c..e9586f2 100644
--- a/test/CMakeLists.txt
+++ b/test/CMakeLists.txt
@@ -119,6 +119,7 @@
 ei_add_test(nullary)
 ei_add_test(nesting_ops "${CMAKE_CXX_FLAGS_DEBUG}")
 ei_add_test(zerosized)
+ei_add_test(dontalign)
 
 ei_add_test(prec_inverse_4x4)
 
diff --git a/test/dontalign.cpp b/test/dontalign.cpp
new file mode 100644
index 0000000..6ef2761
--- /dev/null
+++ b/test/dontalign.cpp
@@ -0,0 +1,73 @@
+// This file is part of Eigen, a lightweight C++ template library
+// for linear algebra.
+//
+// Copyright (C) 2011 Benoit Jacob <jacob.benoit.1@gmail.com>
+//
+// Eigen is free software; you can redistribute it and/or
+// modify it under the terms of the GNU Lesser General Public
+// License as published by the Free Software Foundation; either
+// version 3 of the License, or (at your option) any later version.
+//
+// Alternatively, you can redistribute it and/or
+// modify it under the terms of the GNU General Public License as
+// published by the Free Software Foundation; either version 2 of
+// the License, or (at your option) any later version.
+//
+// Eigen is distributed in the hope that it will be useful, but WITHOUT ANY
+// WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+// FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License or the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU Lesser General Public
+// License and a copy of the GNU General Public License along with
+// Eigen. If not, see <http://www.gnu.org/licenses/>.
+
+#if defined EIGEN_TEST_PART_1 || defined EIGEN_TEST_PART_2 || defined EIGEN_TEST_PART_3 || defined EIGEN_TEST_PART_4
+#define EIGEN_DONT_ALIGN
+#elif defined EIGEN_TEST_PART_5 || defined EIGEN_TEST_PART_6 || defined EIGEN_TEST_PART_7 || defined EIGEN_TEST_PART_8
+#define EIGEN_DONT_ALIGN_STATICALLY
+#endif
+
+#include "main.h"
+#include <Eigen/Dense>
+
+template<typename MatrixType>
+void dontalign(const MatrixType& m)
+{
+  typedef typename MatrixType::Index Index;
+  typedef typename MatrixType::Scalar Scalar;
+  typedef Matrix<Scalar, MatrixType::RowsAtCompileTime, 1> VectorType;
+  typedef Matrix<Scalar, MatrixType::RowsAtCompileTime, MatrixType::RowsAtCompileTime> SquareMatrixType;
+
+  Index rows = m.rows();
+  Index cols = m.cols();
+
+  MatrixType a = MatrixType::Random(rows,cols);
+  SquareMatrixType square = SquareMatrixType::Random(rows,rows);
+  VectorType v = VectorType::Random(rows);
+
+  VERIFY_IS_APPROX(v, square * square.colPivHouseholderQr().solve(v));
+  square = square.inverse().eval();
+  a = square * a;
+  square = square*square;
+  v = square * v;
+  v = a.adjoint() * v;
+  VERIFY(square.determinant() != Scalar(0));
+}
+
+void test_dontalign()
+{
+#if defined EIGEN_TEST_PART_1 || defined EIGEN_TEST_PART_5
+  dontalign(Matrix3d());
+  dontalign(Matrix4f());
+#elif defined EIGEN_TEST_PART_2 || defined EIGEN_TEST_PART_6
+  dontalign(Matrix3cd());
+  dontalign(Matrix4cf());
+#elif defined EIGEN_TEST_PART_3 || defined EIGEN_TEST_PART_7
+  dontalign(Matrix<float, 32, 32>());
+  dontalign(Matrix<std::complex<float>, 32, 32>());
+#elif defined EIGEN_TEST_PART_4 || defined EIGEN_TEST_PART_8
+  dontalign(MatrixXd(32, 32));
+  dontalign(MatrixXcf(32, 32));
+#endif
+}