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d614a753 | 1 | /* Copyright (C) 1991-2020 Free Software Foundation, Inc. |
47707456 | 2 | This file is part of the GNU C Library. |
28f540f4 | 3 | |
47707456 | 4 | The GNU C Library is free software; you can redistribute it and/or |
41bdb6e2 AJ |
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. | |
28f540f4 | 8 | |
47707456 UD |
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 | |
41bdb6e2 | 12 | Lesser General Public License for more details. |
28f540f4 | 13 | |
41bdb6e2 | 14 | You should have received a copy of the GNU Lesser General Public |
59ba27a6 | 15 | License along with the GNU C Library; if not, see |
5a82c748 | 16 | <https://www.gnu.org/licenses/>. */ |
28f540f4 | 17 | |
28f540f4 | 18 | #include <assert.h> |
48dcd0ba | 19 | #include <atomic.h> |
f8a3b5bf | 20 | #include <ldsodefs.h> |
51028f34 | 21 | #include <libintl.h> |
28f540f4 RM |
22 | #include <stdio.h> |
23 | #include <stdlib.h> | |
24 | #include <sysdep.h> | |
383bd1c5 | 25 | #include <unistd.h> |
f8a3b5bf | 26 | #include <sys/mman.h> |
28f540f4 RM |
27 | |
28 | ||
541587c8 | 29 | extern const char *__progname; |
28f540f4 | 30 | |
3ce1f295 UD |
31 | #include <wchar.h> |
32 | #include <libio/iolibio.h> | |
d18ea0c5 | 33 | #define fflush(s) _IO_fflush (s) |
50304ef0 | 34 | |
28f540f4 RM |
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: | |
f8a3b5bf | 38 | a.c:10: foobar: Assertion `a == b' failed. |
28f540f4 RM |
39 | It then aborts program execution via a call to `abort'. */ |
40 | ||
41 | #ifdef FATAL_PREPARE_INCLUDE | |
50304ef0 | 42 | # include FATAL_PREPARE_INCLUDE |
28f540f4 RM |
43 | #endif |
44 | ||
48dcd0ba | 45 | |
28f540f4 | 46 | void |
f8a3b5bf UD |
47 | __assert_fail_base (const char *fmt, const char *assertion, const char *file, |
48 | unsigned int line, const char *function) | |
28f540f4 | 49 | { |
f8a3b5bf | 50 | char *str; |
51028f34 | 51 | |
28f540f4 RM |
52 | #ifdef FATAL_PREPARE |
53 | FATAL_PREPARE; | |
54 | #endif | |
55 | ||
f8a3b5bf UD |
56 | int total; |
57 | if (__asprintf (&str, fmt, | |
383bd1c5 UD |
58 | __progname, __progname[0] ? ": " : "", |
59 | file, line, | |
60 | function ? function : "", function ? ": " : "", | |
f8a3b5bf | 61 | assertion, &total) >= 0) |
383bd1c5 UD |
62 | { |
63 | /* Print the message. */ | |
f8a3b5bf | 64 | (void) __fxprintf (NULL, "%s", str); |
383bd1c5 | 65 | (void) fflush (stderr); |
28f540f4 | 66 | |
f8a3b5bf UD |
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); | |
a1ffb40e | 70 | if (__glibc_likely (buf != MAP_FAILED)) |
f8a3b5bf UD |
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); | |
383bd1c5 UD |
84 | } |
85 | else | |
fab656f5 UD |
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 | } | |
51028f34 | 91 | |
28f540f4 RM |
92 | abort (); |
93 | } | |
f8a3b5bf UD |
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 | } | |
7abb683a | 104 | hidden_def(__assert_fail) |