1 /* $OpenBSD: main.c,v 1.1 2005/09/19 21:50:27 drahn Exp $ */
2
3 /*
4 * Copyright (c) 2005 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 <dlfcn.h>
20 #include <stdio.h>
21
22 int mainSymbol;
23
24 int
main()25 main()
26 {
27 int ret = 1;
28 void *prog;
29 void *libbb;
30 void *libcc;
31 void *p_sym;
32 void *bbsym;
33 void *ccsym;
34 void *a_sym;
35
36
37 prog = dlopen(NULL, RTLD_LAZY);
38 if (prog == NULL) {
39 printf("dlopen(NULL, RTLD_LAZY) FAILED\n");
40 return (1);
41 }
42
43 libbb = dlopen("libbb.so", RTLD_LAZY|RTLD_GLOBAL);
44 if (libbb == NULL) {
45 printf("dlopen(\"libbb.so\", RTLD_LAZY) FAILED\n");
46 return (1);
47 }
48
49 libcc = dlopen("libcc.so", RTLD_LAZY|RTLD_GLOBAL);
50 if (libcc == NULL) {
51 printf("dlopen(\"libcc.so\", RTLD_LAZY) FAILED\n");
52 return (1);
53 }
54
55 p_sym = dlsym(prog, "commonSymbol");
56 bbsym = dlsym(libbb, "commonSymbol");
57 ccsym = dlsym(libcc, "commonSymbol");
58 a_sym = dlsym(RTLD_DEFAULT, "commonSymbol");
59
60 if(a_sym == p_sym) {
61 ret = 0;
62 }
63 if(a_sym == bbsym) {
64 printf("found common symbol in libbb incorrect location\n");
65 ret = 1;
66 }
67 if(a_sym == ccsym) {
68 printf("found common symbol in libcc incorrect location\n");
69 ret = 1;
70 }
71
72 dlclose(libbb);
73 dlclose(libcc);
74
75 return (ret);
76 }
77