add more failtests

failtest/CMakeLists.txt

 message(STATUS "Running the failtests")
 
 ei_add_failtest("failtest_sanity_check")
+
 ei_add_failtest("block_nonconst_ctor_on_const_xpr_0")
 ei_add_failtest("block_nonconst_ctor_on_const_xpr_1")
 ei_add_failtest("block_nonconst_ctor_on_const_xpr_2")
 ei_add_failtest("transpose_nonconst_ctor_on_const_xpr")
 ei_add_failtest("diagonal_nonconst_ctor_on_const_xpr")
 
+ei_add_failtest("const_qualified_block_method_retval_0")
+ei_add_failtest("const_qualified_block_method_retval_1")
+ei_add_failtest("const_qualified_transpose_method_retval")
+ei_add_failtest("const_qualified_diagonal_method_retval")
+
+ei_add_failtest("map_nonconst_ctor_on_const_ptr_0")
+ei_add_failtest("map_nonconst_ctor_on_const_ptr_1")
+ei_add_failtest("map_nonconst_ctor_on_const_ptr_2")
+ei_add_failtest("map_nonconst_ctor_on_const_ptr_3")
+
+
 if (EIGEN_FAILTEST_FAILURE_COUNT)
   message(FATAL_ERROR "${EIGEN_FAILTEST_FAILURE_COUNT} out of ${EIGEN_FAILTEST_COUNT} failtests FAILED. "
                       "Failtests succeed when they generate build errors. "

failtest/const_qualified_block_method_retval_0.cpp

+#include "../Eigen/Core"
+
+#ifdef EIGEN_SHOULD_FAIL_TO_BUILD
+#define CV_QUALIFIER const
+#else
+#define CV_QUALIFIER
+#endif
+
+using namespace Eigen;
+
+void foo(CV_QUALIFIER Matrix3d &m){
+    Block<Matrix3d,3,3> b(m.block<3,3>(0,0));
+}
+
+int main() {}

failtest/const_qualified_block_method_retval_1.cpp

+#include "../Eigen/Core"
+
+#ifdef EIGEN_SHOULD_FAIL_TO_BUILD
+#define CV_QUALIFIER const
+#else
+#define CV_QUALIFIER
+#endif
+
+using namespace Eigen;
+
+void foo(CV_QUALIFIER Matrix3d &m){
+    Block<Matrix3d> b(m.block(0,0,3,3));
+}
+
+int main() {}

failtest/const_qualified_diagonal_method_retval.cpp

+#include "../Eigen/Core"
+
+#ifdef EIGEN_SHOULD_FAIL_TO_BUILD
+#define CV_QUALIFIER const
+#else
+#define CV_QUALIFIER
+#endif
+
+using namespace Eigen;
+
+void foo(CV_QUALIFIER Matrix3d &m){
+    Diagonal<Matrix3d> b(m.diagonal());
+}
+
+int main() {}

failtest/const_qualified_transpose_method_retval.cpp

+#include "../Eigen/Core"
+
+#ifdef EIGEN_SHOULD_FAIL_TO_BUILD
+#define CV_QUALIFIER const
+#else
+#define CV_QUALIFIER
+#endif
+
+using namespace Eigen;
+
+void foo(CV_QUALIFIER Matrix3d &m){
+    Transpose<Matrix3d> b(m.transpose());
+}
+
+int main() {}

failtest/map_nonconst_ctor_on_const_ptr_0.cpp

+#include "../Eigen/Core"
+
+#ifdef EIGEN_SHOULD_FAIL_TO_BUILD
+#define CV_QUALIFIER const
+#else
+#define CV_QUALIFIER
+#endif
+
+using namespace Eigen;
+
+void foo(CV_QUALIFIER float *ptr){
+    Map<Matrix3f> m(ptr);
+}
+
+int main() {}

failtest/map_nonconst_ctor_on_const_ptr_1.cpp

+#include "../Eigen/Core"
+
+#ifdef EIGEN_SHOULD_FAIL_TO_BUILD
+#define CV_QUALIFIER const
+#else
+#define CV_QUALIFIER
+#endif
+
+using namespace Eigen;
+
+void foo(CV_QUALIFIER float *ptr, DenseIndex size){
+    Map<ArrayXf> m(ptr, size);
+}
+
+int main() {}

failtest/map_nonconst_ctor_on_const_ptr_2.cpp

+#include "../Eigen/Core"
+
+#ifdef EIGEN_SHOULD_FAIL_TO_BUILD
+#define CV_QUALIFIER const
+#else
+#define CV_QUALIFIER
+#endif
+
+using namespace Eigen;
+
+void foo(CV_QUALIFIER float *ptr, DenseIndex rows, DenseIndex cols){
+    Map<MatrixXf> m(ptr, rows, cols);
+}
+
+int main() {}

failtest/map_nonconst_ctor_on_const_ptr_3.cpp

+#include "../Eigen/Core"
+
+#ifdef EIGEN_SHOULD_FAIL_TO_BUILD
+#define CV_QUALIFIER const
+#else
+#define CV_QUALIFIER
+#endif
+
+using namespace Eigen;
+
+void foo(CV_QUALIFIER float *ptr, DenseIndex rows, DenseIndex cols){
+    Map<MatrixXf, Aligned, InnerStride<2> > m(ptr, rows, cols, InnerStride<2>());
+}
+
+int main() {}