1 /* Test error reporting for dlsym, dlvsym failures.
2 Copyright (C) 2016-2022 Free Software Foundation, Inc.
3 This file is part of the GNU C Library.
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.
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.
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/>. */
20 #include <gnu/lib-names.h>
25 /* Used to disambiguate symbol names. */
29 test_one (void *handle, const char *name, void *(func) (void *, const char *),
34 snprintf (symbol, sizeof (symbol), "no_such_symbol_%d", counter);
35 char *expected_message;
36 if (asprintf (&expected_message, ": undefined symbol: %s%s",
39 printf ("error: asprintf: %m\n");
43 void *addr = func (handle, symbol);
46 printf ("error: %s: found symbol \"no_such_symbol\"\n", name);
49 const char *message = dlerror ();
52 printf ("error: %s: missing error message\n", name);
55 const char *message_without_path = strchrnul (message, ':');
56 if (strcmp (message_without_path, expected_message) != 0)
58 printf ("error: %s: unexpected error message: %s\n", name, message);
61 free (expected_message);
66 printf ("error: %s: unexpected error message: %s\n", name, message);
72 test_handles (const char *name, void *(func) (void *, const char *),
75 test_one (RTLD_DEFAULT, name, func, suffix);
76 test_one (RTLD_NEXT, name, func, suffix);
78 void *handle = dlopen (LIBC_SO, RTLD_LAZY);
81 printf ("error: cannot dlopen %s: %s\n", LIBC_SO, dlerror ());
84 test_one (handle, name, func, suffix);
89 dlvsym_no_such_version (void *handle, const char *name)
91 return dlvsym (handle, name, "NO_SUCH_VERSION");
95 dlvsym_glibc_private (void *handle, const char *name)
97 return dlvsym (handle, name, "GLIBC_PRIVATE");
103 test_handles ("dlsym", dlsym, "");
104 test_handles ("dlvsym", dlvsym_no_such_version,
105 ", version NO_SUCH_VERSION");
106 test_handles ("dlvsym", dlvsym_glibc_private,
107 ", version GLIBC_PRIVATE");
113 #include <support/test-driver.c>