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 <stdlib.h>
10#include <stdio.h>
11#include <stdarg.h>
12#include "abort_message.h"
13
14#ifdef __BIONIC__
15# include <syslog.h>
16extern "C" void android_set_abort_message(const char* msg);
17#endif // __BIONIC__
18
19#if defined(__APPLE__) && __has_include(<CrashReporterClient.h>)
20# include <CrashReporterClient.h>
21# define _LIBCXXABI_USE_CRASHREPORTER_CLIENT
22#endif
23
24void __abort_message(const char* format, ...)
25{
26 // Write message to stderr. We do this before formatting into a
27 // variable-size buffer so that we still get some information if
28 // formatting into the variable-sized buffer fails.
29#if !defined(NDEBUG) || !defined(LIBCXXABI_BAREMETAL)
30 {
31 fprintf(stderr, format: "libc++abi: ");
32 va_list list;
33 va_start(list, format);
34 vfprintf(stderr, format: format, arg: list);
35 va_end(list);
36 fprintf(stderr, format: "\n");
37 }
38#endif
39
40 // Format the arguments into an allocated buffer. We leak the buffer on
41 // purpose, since we're about to abort() anyway.
42#if defined(_LIBCXXABI_USE_CRASHREPORTER_CLIENT)
43 char* buffer;
44 va_list list;
45 va_start(list, format);
46 vasprintf(&buffer, format, list);
47 va_end(list);
48
49 CRSetCrashLogMessage(buffer);
50#elif defined(__BIONIC__)
51 char* buffer;
52 va_list list;
53 va_start(list, format);
54 vasprintf(&buffer, format, list);
55 va_end(list);
56
57 // Show error in tombstone.
58 android_set_abort_message(buffer);
59
60 // Show error in logcat.
61 openlog("libc++abi", 0, 0);
62 syslog(LOG_CRIT, "%s", buffer);
63 closelog();
64#endif // __BIONIC__
65
66 abort();
67}
68