/*      $OpenBSD: main.c,v 1.1 2005/09/19 21:50:27 drahn Exp $  */

/*
 * Copyright (c) 2005 Kurt Miller <kurt@openbsd.org>
 *
 * Permission to use, copy, modify, and distribute this software for any
 * purpose with or without fee is hereby granted, provided that the above
 * copyright notice and this permission notice appear in all copies.
 *
 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 */

#include <dlfcn.h>
#include <stdio.h>

int mainSymbol;

int
main()
{
        int ret = 1;
        void *prog;
        void *libbb;
        void *libcc;
        void *p_sym;
        void *bbsym;
        void *ccsym;
        void *a_sym;


        prog = dlopen(NULL, RTLD_LAZY);
        if (prog == NULL) {
                printf("dlopen(NULL, RTLD_LAZY) FAILED\n");
                return (1);
        }

        libbb = dlopen("libbb.so", RTLD_LAZY|RTLD_GLOBAL);
        if (libbb == NULL) {
                printf("dlopen(\"libbb.so\", RTLD_LAZY) FAILED\n");
                return (1);
        }

        libcc = dlopen("libcc.so", RTLD_LAZY|RTLD_GLOBAL);
        if (libcc == NULL) {
                printf("dlopen(\"libcc.so\", RTLD_LAZY) FAILED\n");
                return (1);
        }

        p_sym = dlsym(prog, "commonSymbol");
        bbsym = dlsym(libbb, "commonSymbol");
        ccsym = dlsym(libcc, "commonSymbol");
        a_sym = dlsym(RTLD_DEFAULT, "commonSymbol");

        if(a_sym == p_sym) {
                ret = 0;
        }
        if(a_sym == bbsym) {
                printf("found common symbol in libbb incorrect location\n");
                ret = 1;
        }
        if(a_sym == ccsym) {
                printf("found common symbol in libcc incorrect location\n");
                ret = 1;
        }

        dlclose(libbb);
        dlclose(libcc);

        return (ret);
}