]>
Commit | Line | Data |
---|---|---|
31d470ac | 1 | /* Test backtrace and backtrace_symbols for recursive calls. |
b168057a | 2 | Copyright (C) 2010-2015 Free Software Foundation, Inc. |
31d470ac JM |
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 | <http://www.gnu.org/licenses/>. */ | |
18 | ||
19 | #include <execinfo.h> | |
20 | #include <search.h> | |
21 | #include <stdio.h> | |
22 | #include <stdlib.h> | |
23 | #include <string.h> | |
24 | ||
8c53a12c JM |
25 | #include "tst-backtrace.h" |
26 | ||
31d470ac JM |
27 | static int do_test (void); |
28 | #define TEST_FUNCTION do_test () | |
29 | #include "../test-skeleton.c" | |
30 | ||
31d470ac JM |
31 | /* The backtrace should include at least 3 * fn, and do_test. */ |
32 | #define NUM_FUNCTIONS 4 | |
33 | ||
31d470ac JM |
34 | NO_INLINE int |
35 | fn (int c) | |
36 | { | |
37 | void *addresses[NUM_FUNCTIONS]; | |
38 | char **symbols; | |
39 | int n; | |
40 | int i; | |
41 | ||
42 | if (c > 0) | |
43 | { | |
44 | fn (c - 1); | |
45 | return x; | |
46 | } | |
47 | /* Get the backtrace addresses. */ | |
48 | n = backtrace (addresses, sizeof (addresses) / sizeof (addresses[0])); | |
49 | printf ("Obtained backtrace with %d functions\n", n); | |
50 | /* Check that there are at least four functions. */ | |
51 | if (n < NUM_FUNCTIONS) | |
52 | { | |
53 | FAIL (); | |
54 | return 1; | |
55 | } | |
56 | /* Convert them to symbols. */ | |
57 | symbols = backtrace_symbols (addresses, n); | |
58 | /* Check that symbols were obtained. */ | |
59 | if (symbols == NULL) | |
60 | { | |
61 | FAIL (); | |
62 | return 1; | |
63 | } | |
64 | for (i = 0; i < n; ++i) | |
65 | printf ("Function %d: %s\n", i, symbols[i]); | |
66 | /* Check that the function names obtained are accurate. */ | |
67 | for (i = 0; i < n - 1; ++i) | |
8c53a12c | 68 | if (!match (symbols[i], "fn")) |
31d470ac JM |
69 | { |
70 | FAIL (); | |
71 | return 1; | |
72 | } | |
73 | /* Symbol names are not available for static functions, so we do not | |
74 | check do_test. */ | |
75 | return x; | |
76 | } | |
77 | ||
78 | NO_INLINE static int | |
79 | do_test (void) | |
80 | { | |
81 | fn (2); | |
82 | return ret; | |
83 | } |