1 files changed, 116 insertions, 0 deletions
diff --git a/test/eigen2/eigen2_unalignedassert.cpp b/test/eigen2/eigen2_unalignedassert.cpp
new file mode 100644
index 000000000..d10b6f538
--- /dev/null
+++ b/test/eigen2/eigen2_unalignedassert.cpp
@@ -0,0 +1,116 @@
+// This file is part of Eigen, a lightweight C++ template library
+// for linear algebra. Eigen itself is part of the KDE project.
+//
+// Copyright (C) 2008 Benoit Jacob <jacob.benoit.1@gmail.com>
+//
+// This Source Code Form is subject to the terms of the Mozilla
+// Public License v. 2.0. If a copy of the MPL was not distributed
+// with this file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+#include "main.h"
+
+struct Good1
+{
+  MatrixXd m; // good: m will allocate its own array, taking care of alignment.
+  Good1() : m(20,20) {}
+};
+
+struct Good2
+{
+  Matrix3d m; // good: m's size isn't a multiple of 16 bytes, so m doesn't have to be aligned
+};
+
+struct Good3
+{
+  Vector2f m; // good: same reason
+};
+
+struct Bad4
+{
+  Vector2d m; // bad: sizeof(m)%16==0 so alignment is required
+};
+
+struct Bad5
+{
+  Matrix<float, 2, 6> m; // bad: same reason
+};
+
+struct Bad6
+{
+  Matrix<double, 3, 4> m; // bad: same reason
+};
+
+struct Good7
+{
+  EIGEN_MAKE_ALIGNED_OPERATOR_NEW
+  Vector2d m;
+  float f; // make the struct have sizeof%16!=0 to make it a little more tricky when we allow an array of 2 such objects
+};
+
+struct Good8
+{
+  EIGEN_MAKE_ALIGNED_OPERATOR_NEW
+  float f; // try the f at first -- the EIGEN_ALIGN_128 attribute of m should make that still work
+  Matrix4f m;
+};
+
+struct Good9
+{
+  Matrix<float,2,2,DontAlign> m; // good: no alignment requested
+  float f;
+};
+
+template<bool Align> struct Depends
+{
+  EIGEN_MAKE_ALIGNED_OPERATOR_NEW_IF(Align)
+  Vector2d m;
+  float f;
+};
+
+template<typename T>
+void check_unalignedassert_good()
+{
+  T *x, *y;
+  x = new T;
+  delete x;
+  y = new T[2];
+  delete[] y;
+}
+
+#if EIGEN_ARCH_WANTS_ALIGNMENT
+template<typename T>
+void check_unalignedassert_bad()
+{
+  float buf[sizeof(T)+16];
+  float *unaligned = buf;
+  while((reinterpret_cast<std::size_t>(unaligned)&0xf)==0) ++unaligned; // make sure unaligned is really unaligned
+  T *x = ::new(static_cast<void*>(unaligned)) T;
+  x->~T();
+}
+#endif
+
+void unalignedassert()
+{
+  check_unalignedassert_good<Good1>();
+  check_unalignedassert_good<Good2>();
+  check_unalignedassert_good<Good3>();
+#if EIGEN_ARCH_WANTS_ALIGNMENT
+  VERIFY_RAISES_ASSERT(check_unalignedassert_bad<Bad4>());
+  VERIFY_RAISES_ASSERT(check_unalignedassert_bad<Bad5>());
+  VERIFY_RAISES_ASSERT(check_unalignedassert_bad<Bad6>());
+#endif
+
+  check_unalignedassert_good<Good7>();
+  check_unalignedassert_good<Good8>();
+  check_unalignedassert_good<Good9>();
+  check_unalignedassert_good<Depends<true> >();
+
+#if EIGEN_ARCH_WANTS_ALIGNMENT
+  VERIFY_RAISES_ASSERT(check_unalignedassert_bad<Depends<false> >());
+#endif
+}
+
+void test_eigen2_unalignedassert()
+{
+  CALL_SUBTEST(unalignedassert());
+}