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https://github.com/jart/cosmopolitan.git
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8b33204f37
* third_party: Add libcxxabi Added libcxxabi from LLVM 17.0.6 The library implements the Itanium C++ exception handling ABI. * third_party/libcxxabi: Enable __cxa_thread_atexit Enable `__cxa_thread_atexit` from libcxxabi. `__cxa_thread_atexit_impl` is still implemented by the cosmo libc. The original `__cxa_thread_atexit` has been removed. * third_party/libcxx: Build with exceptions Build libcxx with exceptions enabled. - Removed `_LIBCPP_NO_EXCEPTIONS` from `__config`. - Switched the exception implementation to `libcxxabi`. These two files are taken from the same `libcxx` version as mentioned in `README.cosmo`. - Removed `new_handler_fallback` in favor of `libcxxabi` implementation. - Enable `-fexceptions` and `-frtti` for `libcxx`. - Removed `THIRD_PARTY_LIBCXX` dependency from `libcxxabi` and `libunwind`. These libraries do not use any runtime `libcxx` functions, just headers. * libc: Remove remaining redundant cxa functions - `__cxa_pure_virtual` in `libcxxabi` is also a stub similar to the existing one. - `__cxa_guard_*` from `libcxxabi` is used instead of the ones from Android. Now there should be no more duplicate implementations. `__cxa_thread_atexit_impl`, `__cxa_atexit`, and related supporting functions, are still left to other libraries as in `libcxxabi`. `libcxxabi` is also now added to `cosmopolitan.a` to make up for the removed functions. Affected in-tree libraries (`third_party/double-conversion`) have been updated.
79 lines
2.4 KiB
C++
79 lines
2.4 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 "libc/isystem/stdlib.h"
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#include "libc/stdio/stdio.h"
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#include "libc/isystem/stdarg.h"
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#include "third_party/libcxxabi/abort_message.h"
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#ifdef __BIONIC__
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# include <android/api-level.h>
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# if __ANDROID_API__ >= 21
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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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# else
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# include <assert.h>
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# endif // __ANDROID_API__ >= 21
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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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# define _LIBCXXABI_USE_CRASHREPORTER_CLIENT
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#endif
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void abort_message(const char* format, ...)
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{
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// Write message to stderr. We do this before formatting into a
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// variable-size buffer so that we still get some information if
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// formatting into the variable-sized buffer fails.
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#if !defined(NDEBUG) || !defined(LIBCXXABI_BAREMETAL)
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{
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fprintf(stderr, "libc++abi: ");
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va_list list;
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va_start(list, format);
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vfprintf(stderr, format, list);
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va_end(list);
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fprintf(stderr, "\n");
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}
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#endif
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// Format the arguments into an allocated buffer. We leak the buffer on
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// purpose, since we're about to abort() anyway.
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#if defined(_LIBCXXABI_USE_CRASHREPORTER_CLIENT)
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char* buffer;
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va_list list;
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va_start(list, format);
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vasprintf(&buffer, format, list);
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va_end(list);
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CRSetCrashLogMessage(buffer);
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#elif defined(__BIONIC__)
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char* buffer;
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va_list list;
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va_start(list, format);
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vasprintf(&buffer, format, list);
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va_end(list);
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# if __ANDROID_API__ >= 21
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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++abi", 0, 0);
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syslog(LOG_CRIT, "%s", buffer);
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closelog();
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# else
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// The good error reporting wasn't available in Android until L. Since we're
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// about to abort anyway, just call __assert2, which will log _somewhere_
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// (tombstone and/or logcat) in older releases.
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__assert2(__FILE__, __LINE__, __func__, buffer);
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# endif // __ANDROID_API__ >= 21
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#endif // __BIONIC__
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abort();
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}
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