| xf.li | bdd93d5 | 2023-05-12 07:10:14 -0700 | [diff] [blame] | 1 | /* Copyright (C) 1991-2016 Free Software Foundation, Inc. |
| 2 | This file is part of the GNU C Library. |
| 3 | |
| 4 | The GNU C Library is free software; you can redistribute it and/or |
| 5 | modify it under the terms of the GNU Lesser General Public |
| 6 | License as published by the Free Software Foundation; either |
| 7 | version 2.1 of the License, or (at your option) any later version. |
| 8 | |
| 9 | The GNU C Library is distributed in the hope that it will be useful, |
| 10 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 11 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 12 | Lesser General Public License for more details. |
| 13 | |
| 14 | You should have received a copy of the GNU Lesser General Public |
| 15 | License along with the GNU C Library; if not, see |
| 16 | <http://www.gnu.org/licenses/>. */ |
| 17 | |
| 18 | #include <assert.h> |
| 19 | #include <atomic.h> |
| 20 | #include <ldsodefs.h> |
| 21 | #include <libintl.h> |
| 22 | #include <stdio.h> |
| 23 | #include <stdlib.h> |
| 24 | #include <sysdep.h> |
| 25 | #include <unistd.h> |
| 26 | #include <sys/mman.h> |
| 27 | |
| 28 | |
| 29 | extern const char *__progname; |
| 30 | |
| 31 | #include <wchar.h> |
| 32 | #include <libio/iolibio.h> |
| 33 | #define fflush(s) _IO_fflush (s) |
| 34 | |
| 35 | /* This function, when passed a string containing an asserted |
| 36 | expression, a filename, and a line number, prints a message |
| 37 | on the standard error stream of the form: |
| 38 | a.c:10: foobar: Assertion `a == b' failed. |
| 39 | It then aborts program execution via a call to `abort'. */ |
| 40 | |
| 41 | #ifdef FATAL_PREPARE_INCLUDE |
| 42 | # include FATAL_PREPARE_INCLUDE |
| 43 | #endif |
| 44 | |
| 45 | |
| 46 | void |
| 47 | __assert_fail_base (const char *fmt, const char *assertion, const char *file, |
| 48 | unsigned int line, const char *function) |
| 49 | { |
| 50 | char *str; |
| 51 | |
| 52 | #ifdef FATAL_PREPARE |
| 53 | FATAL_PREPARE; |
| 54 | #endif |
| 55 | |
| 56 | int total; |
| 57 | if (__asprintf (&str, fmt, |
| 58 | __progname, __progname[0] ? ": " : "", |
| 59 | file, line, |
| 60 | function ? function : "", function ? ": " : "", |
| 61 | assertion, &total) >= 0) |
| 62 | { |
| 63 | /* Print the message. */ |
| 64 | (void) __fxprintf (NULL, "%s", str); |
| 65 | (void) fflush (stderr); |
| 66 | |
| 67 | total = (total + 1 + GLRO(dl_pagesize) - 1) & ~(GLRO(dl_pagesize) - 1); |
| 68 | struct abort_msg_s *buf = __mmap (NULL, total, PROT_READ | PROT_WRITE, |
| 69 | MAP_ANON | MAP_PRIVATE, -1, 0); |
| 70 | if (__glibc_likely (buf != MAP_FAILED)) |
| 71 | { |
| 72 | buf->size = total; |
| 73 | strcpy (buf->msg, str); |
| 74 | |
| 75 | /* We have to free the old buffer since the application might |
| 76 | catch the SIGABRT signal. */ |
| 77 | struct abort_msg_s *old = atomic_exchange_acq (&__abort_msg, buf); |
| 78 | |
| 79 | if (old != NULL) |
| 80 | __munmap (old, old->size); |
| 81 | } |
| 82 | |
| 83 | free (str); |
| 84 | } |
| 85 | else |
| 86 | { |
| 87 | /* At least print a minimal message. */ |
| 88 | static const char errstr[] = "Unexpected error.\n"; |
| 89 | __libc_write (STDERR_FILENO, errstr, sizeof (errstr) - 1); |
| 90 | } |
| 91 | |
| 92 | abort (); |
| 93 | } |
| 94 | |
| 95 | |
| 96 | #undef __assert_fail |
| 97 | void |
| 98 | __assert_fail (const char *assertion, const char *file, unsigned int line, |
| 99 | const char *function) |
| 100 | { |
| 101 | __assert_fail_base (_("%s%s%s:%u: %s%sAssertion `%s' failed.\n%n"), |
| 102 | assertion, file, line, function); |
| 103 | } |
| 104 | hidden_def(__assert_fail) |