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add unit test for bug #132

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This commit is contained in:
Benoit Jacob 2010-06-09 20:50:18 -04:00
parent 501063d9e9
commit 93d8d0e1b5
2 changed files with 42 additions and 0 deletions
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1
test/CMakeLists.txt
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@ -236,6 +236,7 @@ if(NOT EIGEN_DEFAULT_TO_ROW_MAJOR)
endif()
ei_add_test(swap)
ei_add_test(visitor)
ei_add_test(bug_132)
ei_add_test(prec_inverse_4x4 ${EI_OFLAG})

41
test/bug_132.cpp Normal file
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@ -0,0 +1,41 @@
// This file is part of Eigen, a lightweight C++ template library
// for linear algebra. Eigen itself is part of the KDE project.
//
// Copyright (C) 2010 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/>.
#include "main.h"
void test_bug_132() {
enum { size = 100 };
MatrixXd A(size, size);
VectorXd b(size), c(size);
{
VectorXd y = A.transpose() * (b-c); // bug 132: infinite recursion in coeffRef
VectorXd z = (b-c).transpose() * A; // bug 132: infinite recursion in coeffRef
}
// the following ones weren't failing, but let's include them for completeness:
{
VectorXd y = A * (b-c);
VectorXd z = (b-c).transpose() * A.transpose();
}
}