f0054a4896
Using `_LIBCPP_WEAK` doesn't give us anything that using `[[gnu::weak]]` directly couldn't, so we can just expand the macro. As a drive-by this also refactors `_LIBCPP_OVERRIDABLE_FUNCTION`.
66 lines
1.9 KiB
C++
66 lines
1.9 KiB
C++
//===----------------------------------------------------------------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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#include <__config>
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#include <__verbose_abort>
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#include <cstdarg>
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#include <cstdio>
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#include <cstdlib>
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#ifdef __BIONIC__
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# include <syslog.h>
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extern "C" void android_set_abort_message(const char* msg);
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#endif // __BIONIC__
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#if defined(__APPLE__) && __has_include(<CrashReporterClient.h>)
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# include <CrashReporterClient.h>
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#endif
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_LIBCPP_BEGIN_NAMESPACE_STD
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[[gnu::weak]] void __libcpp_verbose_abort(char const* format, ...) noexcept {
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// Write message to stderr. We do this before formatting into a
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// buffer so that we still get some information out if that fails.
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{
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va_list list;
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va_start(list, format);
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std::vfprintf(stderr, format, list);
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va_end(list);
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}
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// Format the arguments into an allocated buffer for CrashReport & friends.
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// We leak the buffer on purpose, since we're about to abort() anyway.
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char* buffer;
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(void)buffer;
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va_list list;
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va_start(list, format);
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#if defined(__APPLE__) && __has_include(<CrashReporterClient.h>)
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// Note that we should technically synchronize accesses here (by e.g. taking a lock),
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// however concretely we're only setting a pointer, so the likelihood of a race here
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// is low.
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vasprintf(&buffer, format, list);
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CRSetCrashLogMessage(buffer);
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#elif defined(__BIONIC__)
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vasprintf(&buffer, format, list);
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// Show error in tombstone.
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android_set_abort_message(buffer);
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// Show error in logcat.
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openlog("libc++", 0, 0);
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syslog(LOG_CRIT, "%s", buffer);
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closelog();
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#endif
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va_end(list);
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std::abort();
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}
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_LIBCPP_END_NAMESPACE_STD
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