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//===----------------------------------------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
#include <__assert>
#include <__config>
#include <cstdarg>
#include <cstdio>
#include <cstdlib>
#ifdef __BIONIC__
# include <android/api-level.h>
# include <syslog.h>
extern "C" void android_set_abort_message(const char* msg);
#endif
#if defined(__APPLE__) && __has_include(<CrashReporterClient.h>)
# include <CrashReporterClient.h>
#endif
_LIBCPP_BEGIN_NAMESPACE_STD
_LIBCPP_WEAK
void __libcpp_assertion_handler(char const* format, ...) {
// Write message to stderr. We do this before formatting into a
// buffer so that we still get some information out if that fails.
{
va_list list;
va_start(list, format);
std::vfprintf(stderr, format, list);
va_end(list);
}
// Format the arguments into an allocated buffer for CrashReport & friends.
// We leak the buffer on purpose, since we're about to abort() anyway.
char* buffer; (void)buffer;
va_list list;
va_start(list, format);
#if defined(__APPLE__) && __has_include(<CrashReporterClient.h>)
// Note that we should technically synchronize accesses here (by e.g. taking a lock),
// however concretely we're only setting a pointer, so the likelihood of a race here
// is low.
vasprintf(&buffer, format, list);
CRSetCrashLogMessage(buffer);
#elif defined(__BIONIC__)
// Show error in tombstone.
vasprintf(&buffer, format, list);
android_set_abort_message(buffer);
// Show error in logcat.
openlog("libc++", 0, 0);
syslog(LOG_CRIT, "%s", buffer);
closelog();
#endif
va_end(list);
std::abort();
}
_LIBCPP_END_NAMESPACE_STD
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