1 | //===----------------------------------------------------------------------===// |
2 | // |
3 | // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
4 | // See https://llvm.org/LICENSE.txt for license information. |
5 | // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
6 | // |
7 | //===----------------------------------------------------------------------===// |
8 | |
9 | #include <__config> |
10 | #include <__verbose_abort> |
11 | #include <cstdarg> |
12 | #include <cstdio> |
13 | #include <cstdlib> |
14 | |
15 | #ifdef __BIONIC__ |
16 | # include <syslog.h> |
17 | extern "C" void android_set_abort_message(const char* msg); |
18 | #endif // __BIONIC__ |
19 | |
20 | #if defined(__APPLE__) && __has_include(<CrashReporterClient.h>) |
21 | # include <CrashReporterClient.h> |
22 | #endif |
23 | |
24 | _LIBCPP_BEGIN_NAMESPACE_STD |
25 | |
26 | _LIBCPP_WEAK void __libcpp_verbose_abort(char const* format, ...) noexcept { |
27 | // Write message to stderr. We do this before formatting into a |
28 | // buffer so that we still get some information out if that fails. |
29 | { |
30 | va_list list; |
31 | va_start(list, format); |
32 | std::vfprintf(stderr, format: format, arg: list); |
33 | va_end(list); |
34 | } |
35 | |
36 | // Format the arguments into an allocated buffer for CrashReport & friends. |
37 | // We leak the buffer on purpose, since we're about to abort() anyway. |
38 | char* buffer; |
39 | (void)buffer; |
40 | va_list list; |
41 | va_start(list, format); |
42 | |
43 | #if defined(__APPLE__) && __has_include(<CrashReporterClient.h>) |
44 | // Note that we should technically synchronize accesses here (by e.g. taking a lock), |
45 | // however concretely we're only setting a pointer, so the likelihood of a race here |
46 | // is low. |
47 | vasprintf(&buffer, format, list); |
48 | CRSetCrashLogMessage(buffer); |
49 | #elif defined(__BIONIC__) |
50 | vasprintf(&buffer, format, list); |
51 | |
52 | // Show error in tombstone. |
53 | android_set_abort_message(buffer); |
54 | |
55 | // Show error in logcat. |
56 | openlog("libc++" , 0, 0); |
57 | syslog(LOG_CRIT, "%s" , buffer); |
58 | closelog(); |
59 | #endif |
60 | va_end(list); |
61 | |
62 | std::abort(); |
63 | } |
64 | |
65 | _LIBCPP_END_NAMESPACE_STD |
66 | |