/* -*-comment-start: "//";comment-end:""-*- * Mes --- Maxwell Equations of Software * Copyright © 2018 Jan (janneke) Nieuwenhuizen <janneke@gnu.org> * * This file is part of Mes. * * Mes is free software; 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 3 of the License, or (at * your option) any later version. * * Mes 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 General Public License for more details. * * You should have received a copy of the GNU General Public License * along with Mes. If not, see <http://www.gnu.org/licenses/>. */ #include <string.h> struct foo { int i; int *j; struct foo *bar; struct foo *baz; }; struct bar { int i, *j; struct bar *bar, *baz; }; int main () { struct foo f = {0, 0, 0, 0}; struct foo g = {1, 0, 0, 0}; f.j = &f.i; g.j = &g.i; f.bar = &f; f.baz = &g; struct bar b; memcpy (&b, &f, sizeof (struct foo)); if (b.i != 0) return 1; if (*b.j != 0) return 2; if (b.bar->i != 0) return 3; if (*b.baz->j != 1) return 4; return 0; }