1 /* $OpenBSD: ab.c,v 1.2 2007/08/01 12:53:28 kurt Exp $ */ 2 3 /* 4 * Copyright (c) 2007 Kurt Miller <kurt@openbsd.org> 5 * 6 * Permission to use, copy, modify, and distribute this software for any 7 * purpose with or without fee is hereby granted, provided that the above 8 * copyright notice and this permission notice appear in all copies. 9 * 10 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 11 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 12 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR 13 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 14 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 15 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 16 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 17 */ 18 19 #include <err.h> 20 21 void *hidden_check = &hidden_check; 22 __asm(".hidden hidden_check"); 23 24 extern void *libab_hidden_val; 25 26 void test_ab() 27 { 28 libab_hidden_val = hidden_check; 29 if (hidden_check != &hidden_check) 30 errx(1, "libab: hidden_check != &hidden_check\n"); 31 } 32