69 lines
1.5 KiB
C
69 lines
1.5 KiB
C
/* -*-comment-start: "//";comment-end:""-*-
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* GNU Mes --- Maxwell Equations of Software
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* Copyright © 2018 Jan (janneke) Nieuwenhuizen <janneke@gnu.org>
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* Copyright © 2021 W. J. van der Laan <laanwj@protonmail.com>
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*
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* This file is part of GNU Mes.
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*
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* GNU Mes is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 3 of the License, or (at
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* your option) any later version.
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*
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* GNU Mes is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with GNU Mes. If not, see <http://www.gnu.org/licenses/>.
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*/
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struct foo
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{
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int length;
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char buf[16];
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};
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struct bar
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{
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struct
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{
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int x;
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int y;
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int z;
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};
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};
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#if __i386__ || __arm__ || __riscv_xlen == 32
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#define ptr_size 4
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#define foo_size 20
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#define bar_size 12
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#elif __x86_64__ || __riscv_xlen == 64
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#define ptr_size 8
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#define foo_size 24
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#define bar_size 12
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#endif
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int
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main ()
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{
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char **p;
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if (sizeof (*p) != ptr_size)
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return 1;
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if (sizeof (**p) != 1)
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return 2;
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oputs ("size: ");
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oputs (itoa (sizeof (struct foo)));
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oputs ("\n");
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if (sizeof (struct foo) != 20)
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return 3;
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struct foo f;
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if (sizeof f != 20)
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return 4;
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if (sizeof (struct bar) != 12)
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return 5;
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return 0;
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}
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