/* -*-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 #include typedef struct foo { int i; } foo; typedef struct { int i; struct foo f; struct foo *p; } bar; bar baz[2] = {1, 2, 3, 4, 5, 6}; bar *list[2]; //NYACC //#define offsetof(type, field) ((size_t) &((type *)0)->field) #if __MESC__ #define offsetof(type, field) (&((type *)0)->field) #else #define offsetof(type, field) ((size_t)&((type *)0)->field) #endif int main () { foo f = {1}; printf ("f.i=%d\n", f.i); bar b = {1, 2, &f}; printf ("b.i=%d\n", b.i); printf ("b.f.i=%d\n", b.f.i); if (b.f.i != 2) return 1; printf ("b.p->i=%d\n", b.p->i); if (b.p->i != 1) return 2; bar* p = &b; p->i = 2; printf ("p->i=%d\n", b.i); p->i++; printf ("p->i=%d\n", b.i); p->i--; printf ("p->i=%d\n", b.i); printf ("p->f.i=%d\n", p->f.i); if (p->f.i != 2) return 3; printf ("p->p->i=%d\n", p->p->i); if (p->p->i != 1) return 4; bar** pp = &p; (*pp)->i = 3; printf ("(*pp)->i=%d\n", b.i); printf ("sizeof i:%d\n", sizeof (p->i)); if ((sizeof p->i) != 4) return 5; printf ("offsetof g=%d\n", (offsetof (bar ,f))); #if __MESC__ //if ((offsetof (bar ,f)) != 4) return 6; //#define offsetof(type, field) (&((type *)0)->field) if ((&((bar *)0)->f) != 4) return 6; #else if ((offsetof (bar ,f)) != 4) return 6; #endif // printf ("(*pp)->b.i=%d\n", (*pp)->f.i); // if ((*pp)->f.i != 2) return 7; // if (baz[0].i != 1) return 8; // printf ("baz[0].f.i=%d\n", baz[0].f.i); // if (baz[0].f.i != 2) return 9; // printf ("baz[1].i=%d\n", baz[1].i); // if (baz[1].i != 4) return 10; // printf ("baz[1].f.i=%d\n", baz[1].f.i); // if (baz[1].f.i != 5) return 11; // bar one = {0}; // printf ("one.i\n", one.i); // if (one.i != 0) return 12; // printf ("one.f.i\n", one.f.i); // if (one.f.i != 0) return 13; // bar b0 = {2}; // struct foo f0 = {0}; // struct foo *pf = &f0; // list[0] = &b0; // list[0]->p = pf; // eputs ("b0.i="); eputs (itoa (b0.i)); eputs ("\n"); // if (b0.i != 2) return 14; // eputs ("b0.p->i="); eputs (itoa (b0.p->i)); eputs ("\n"); // if (b0.p->i != 0) return 15; return 0; }