| xf.li | bdd93d5 | 2023-05-12 07:10:14 -0700 | [diff] [blame] | 1 | /* Test backtrace and backtrace_symbols for recursive calls. |
| 2 | Copyright (C) 2010-2016 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 | <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 | |
| 25 | #include "tst-backtrace.h" |
| 26 | |
| 27 | static int do_test (void); |
| 28 | #define TEST_FUNCTION do_test () |
| 29 | #include "../test-skeleton.c" |
| 30 | |
| 31 | /* The backtrace should include at least 3 * fn, and do_test. */ |
| 32 | #define NUM_FUNCTIONS 4 |
| 33 | |
| 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) |
| 68 | if (!match (symbols[i], "fn")) |
| 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 | } |