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79d0ecafaa
ASL is deprecated in macOS 10.12. It may be time to transition to os_log now that deployment targets have been raised to 10.12, but until that project starts these warnings are just pollution. Filed rdar://121066531 to track adoption of `os_log()` if appropriate.
99 lines
3.2 KiB
C++
99 lines
3.2 KiB
C++
//===- lib/Support/ErrorHandling.cpp - Callbacks for errors ---------------===//
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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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//
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// This file defines an API used to indicate fatal error conditions. Non-fatal
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// errors (most of them) should be handled through LLVMContext.
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//
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//===----------------------------------------------------------------------===//
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#include "llvm/Support/ErrorHandling.h"
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#include "llvm/ADT/StringRef.h"
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#include <cassert>
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#include <cstdlib>
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#include <cstdio>
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#if defined(_MSC_VER)
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# include <io.h>
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# include <fcntl.h>
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#endif
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#include <stdarg.h>
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#if SWIFT_STDLIB_HAS_ASL
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#include <asl.h>
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#elif defined(__ANDROID__)
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#include <android/log.h>
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#endif
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namespace {
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void error(const char *prefix, const char *msg, const char *file = nullptr, unsigned line = 0) {
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char buffer[1024];
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if (file) {
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snprintf(buffer, sizeof(buffer), "%s%s at %s:%u\n", prefix, msg, file, line);
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} else {
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snprintf(buffer, sizeof(buffer), "%s%s\n", prefix, msg);
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}
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#if SWIFT_STDLIB_HAS_ASL
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#pragma clang diagnostic push
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#pragma clang diagnostic ignored "-Wdeprecated-declarations"
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asl_log(nullptr, nullptr, ASL_LEVEL_ERR, "%s", buffer);
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#pragma clang diagnostic pop
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#elif defined(__ANDROID__) && !defined(__TERMUX__)
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__android_log_print(ANDROID_LOG_FATAL, "SwiftRuntime", "%s", buffer);
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#elif defined(_WIN32)
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#define STDERR_FILENO 2
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_write(STDERR_FILENO, buffer, strlen(buffer));
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#else
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fputs(buffer, stderr);
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fflush(stderr);
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#endif
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}
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}
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using namespace llvm;
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void __swift::__runtime::llvm::report_fatal_error(const char *Reason,
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bool GenCrashDiag) {
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error("LLVM ERROR: ", Reason);
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abort();
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}
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void __swift::__runtime::llvm::report_fatal_error(const std::string &Reason,
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bool GenCrashDiag) {
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report_fatal_error(Reason.c_str(), GenCrashDiag);
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}
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void __swift::__runtime::llvm::report_fatal_error(StringRef Reason,
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bool GenCrashDiag) {
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report_fatal_error(Reason.str(), GenCrashDiag);
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}
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void __swift::__runtime::llvm::report_bad_alloc_error(const char *Reason,
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bool GenCrashDiag) {
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// Don't call the normal error handler. It may allocate memory. Directly write
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// an OOM to stderr and abort.
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error("LLVM ERROR: ", "out of memory");
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abort();
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}
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void __swift::__runtime::llvm::llvm_unreachable_internal(
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const char *msg, const char *file, unsigned line) {
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// This code intentionally doesn't call the ErrorHandler callback, because
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// llvm_unreachable is intended to be used to indicate "impossible"
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// situations, and not legitimate runtime errors.
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error("", msg ? msg : "UNREACHABLE executed!", file, line);
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abort();
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#ifdef LLVM_BUILTIN_UNREACHABLE
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// Windows systems and possibly others don't declare abort() to be noreturn,
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// so use the unreachable builtin to avoid a Clang self-host warning.
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LLVM_BUILTIN_UNREACHABLE;
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#endif
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}
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