1 /* $NetBSD: h_gets.c,v 1.1 2010/12/27 02:04:19 pgoyette Exp $ */ 2 3 /* 4 * Copyright (c) 2008 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 17 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 18 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 19 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 20 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 21 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 22 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 23 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 24 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 25 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 26 * POSSIBILITY OF SUCH DAMAGE. 27 */ 28 29 #include <sys/cdefs.h> 30 __COPYRIGHT("@(#) Copyright (c) 2008\ 31 The NetBSD Foundation, inc. All rights reserved."); 32 __RCSID("$NetBSD: h_gets.c,v 1.1 2010/12/27 02:04:19 pgoyette Exp $"); 33 34 #include <stdio.h> 35 36 #ifdef __FreeBSD__ 37 /* _FORTIFY_SOURCE, at the very least, may #define a gets() macro. */ 38 #undef gets 39 40 /* 41 * We want to test the gets() implementation, but cannot simply link against 42 * the gets symbol because it is not in the default version. (We've made it 43 * unavailable by default on FreeBSD because it should not be used.) 44 * 45 * The next two lines create an unsafe_gets() function that resolves to 46 * gets@FBSD_1.0, which we call from our local gets() implementation. 47 */ 48 __sym_compat(gets, unsafe_gets, FBSD_1.0); 49 char *unsafe_gets(char *); 50 51 char *gets(char *buf) 52 { 53 return unsafe_gets(buf); 54 } 55 #endif 56 57 int 58 main(int argc, char *argv[]) 59 { 60 char b[10]; 61 (void)gets(b); 62 (void)printf("%s\n", b); 63 return 0; 64 } 65