powerpc: Fix missing verb and typo in comment about AT_HWCAP entry
[glibc.git] / elf / tst-dlsym-error.c
blobfb084c510c7d8b783f661dc5d2e0e4b8e970879f
1 /* Test error reporting for dlsym, dlvsym failures.
2 Copyright (C) 2016 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 <http://www.gnu.org/licenses/>. */
19 #include <dlfcn.h>
20 #include <gnu/lib-names.h>
21 #include <stdio.h>
22 #include <stdlib.h>
23 #include <string.h>
25 /* Used to disambiguate symbol names. */
26 static int counter;
28 static void
29 test_one (void *handle, const char *name, void *(func) (void *, const char *),
30 const char *suffix)
32 ++counter;
33 char symbol[32];
34 snprintf (symbol, sizeof (symbol), "no_such_symbol_%d", counter);
35 char *expected_message;
36 if (asprintf (&expected_message, ": undefined symbol: %s%s",
37 symbol, suffix) < 0)
39 printf ("error: asprintf: %m\n");
40 abort ();
43 void *addr = func (handle, symbol);
44 if (addr != NULL)
46 printf ("error: %s: found symbol \"no_such_symbol\"\n", name);
47 abort ();
49 const char *message = dlerror ();
50 if (message == NULL)
52 printf ("error: %s: missing error message\n", name);
53 abort ();
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);
59 abort ();
61 free (expected_message);
63 message = dlerror ();
64 if (message != NULL)
66 printf ("error: %s: unexpected error message: %s\n", name, message);
67 abort ();
71 static void
72 test_handles (const char *name, void *(func) (void *, const char *),
73 const char *suffix)
75 test_one (RTLD_DEFAULT, name, func, suffix);
76 test_one (RTLD_NEXT, name, func, suffix);
78 void *handle = dlopen (LIBC_SO, RTLD_LAZY);
79 if (handle == NULL)
81 printf ("error: cannot dlopen %s: %s\n", LIBC_SO, dlerror ());
82 abort ();
84 test_one (handle, name, func, suffix);
85 dlclose (handle);
88 static void *
89 dlvsym_no_such_version (void *handle, const char *name)
91 return dlvsym (handle, name, "NO_SUCH_VERSION");
94 static void *
95 dlvsym_glibc_private (void *handle, const char *name)
97 return dlvsym (handle, name, "GLIBC_PRIVATE");
100 static int
101 do_test (void)
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");
109 return 0;
113 #define TEST_FUNCTION do_test ()
114 #include "../test-skeleton.c"