1 /* Test RTLD_DEFAULT/RTLD_NEXT when the definition has multiple versions.
2 Copyright (C) 2018-2022 Free Software Foundation, Inc.
3 This file is part of the GNU C Library.
4
5 The GNU C Library is free software; you can redistribute it and/or
6 modify it under the terms of the GNU Lesser General Public
7 License as published by the Free Software Foundation; either
8 version 2.1 of the License, or (at your option) any later version.
9
10 The GNU C Library is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 Lesser General Public License for more details.
14
15 You should have received a copy of the GNU Lesser General Public
16 License along with the GNU C Library; if not, see
17 <https://www.gnu.org/licenses/>. */
18
19 #include <dlfcn.h>
20 #include <stdio.h>
21
22 #include "testobj.h"
23
24 static int
do_test(void)25 do_test (void)
26 {
27 /* Resolve to foo@@v3 in nextmod3.so, instead of
28 foo@v1 or foo@v2. */
29 int (*fp) (int) = dlsym (RTLD_DEFAULT, "foo");
30 int res = fp (0);
31 printf ("preload (0) = %d, %s\n", res, res == 3 ? "ok" : "wrong");
32 if (res != 3)
33 return 1;
34
35 /* Resolve to foo@@v3 in nextmod3.so, instead of
36 foo@v1 or foo@v2. */
37 fp = dlsym (RTLD_NEXT, "foo");
38 res = fp (0);
39 printf ("preload (0) = %d, %s\n", res, res == 3 ? "ok" : "wrong");
40 if (res != 3)
41 return 1;
42
43 return 0;
44 }
45
46 #include <support/test-driver.c>
47