1/* Test of opening a file descriptor. 2 Copyright (C) 2007 Free Software Foundation, Inc. 3 4 This program is free software: you can redistribute it and/or modify 5 it under the terms of the GNU General Public License as published by 6 the Free Software Foundation; either version 3 of the License, or 7 (at your option) any later version. 8 9 This program is distributed in the hope that it will be useful, 10 but WITHOUT ANY WARRANTY; without even the implied warranty of 11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 12 GNU General Public License for more details. 13 14 You should have received a copy of the GNU General Public License 15 along with this program. If not, see <http://www.gnu.org/licenses/>. */ 16 17/* Written by Bruno Haible <bruno@clisp.org>, 2007. */ 18 19#include <config.h> 20 21#include <fcntl.h> 22 23#include <stdio.h> 24#include <stdlib.h> 25 26#define ASSERT(expr) \ 27 do \ 28 { \ 29 if (!(expr)) \ 30 { \ 31 fprintf (stderr, "%s:%d: assertion failed\n", __FILE__, __LINE__); \ 32 abort (); \ 33 } \ 34 } \ 35 while (0) 36 37int 38main () 39{ 40 ASSERT (open ("/dev/null", O_RDONLY) >= 0); 41 42 return 0; 43} 44