// SPDX-FileCopyrightText: The Eigen Authors
// SPDX-License-Identifier: MPL-2.0

Matrix2i a;
a << 1, 2, 3, 4;
cout << "Here is the matrix a:\n" << a << endl;

a = a.transpose();  // !!! do NOT do this !!!
cout << "and the result of the aliasing effect:\n" << a << endl;