/* -*-comment-start: "//";comment-end:""-*- * GNU Mes --- Maxwell Equations of Software * Copyright © 2017 Jan (janneke) Nieuwenhuizen * * This file is part of GNU Mes. * * GNU 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. * * GNU 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 GNU Mes. If not, see . */ #include #if __MESC__ #define __attribute__(x) #endif struct foo13 { int a; int b; int c; char d; } __attribute__ ((packed)); ; struct foo16 { int a; int b; int c; int d; }; struct foo13 tab14[3]; struct foo16 tab16[3]; int main () { unsigned char *p; tab14[1].a = -1; tab14[1].b = -1; tab14[1].c = -1; tab14[1].d = -1; p = &tab14; for (int i = 0; i < sizeof (struct foo13) * 2; i++) { if (i < 10) eputs (" "); eputs (itoa (i)); eputs (": "); eputs (itoa (p[i])); eputs ("\n"); } for (int i = 0; i < sizeof (struct foo13); i++) if (p[i] != 0) return 1 + i; for (int i = sizeof (struct foo13); i < 2 * sizeof (struct foo13); i++) if (p[i] != 255) return 1 + i; tab16[1].a = -1; tab16[1].b = -1; tab16[1].c = -1; tab16[1].d = -1; p = &tab16; for (int i = 0; i < sizeof (struct foo16) * 2; i++) { if (i < 10) eputs (" "); eputs (itoa (i)); eputs (": "); eputs (itoa (p[i])); eputs ("\n"); } for (int i = 0; i < sizeof (struct foo16); i++) if (p[i] != 0) return 1 + i; for (int i = sizeof (struct foo16); i < 2 * sizeof (struct foo16); i++) if (p[i] != 255) return 1 + i; return 0; }