mes/scaffold/tests/84-struct-field-list.c

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/* -*-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;
}