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https://github.com/apple/swift.git
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Doug Gregor
cb5b0ee938
Fatal errors in the concurrency runtime used a mix of swift_Concurrency_fatalError[v] and manual calls to abort(). Drop the dependency on abort() by routing all true fatal errors through swift_Concurrency_fatalErrorv and eventually to a new `_swift_fatalError` C entrypoint defined in the Embedded Swift runtime, which (optionally) prints and then (always) traps.
50 lines
1.7 KiB
C++
50 lines
1.7 KiB
C++
//===--- Error.cpp - Error handling support code --------------------------===//
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//
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// This source file is part of the Swift.org open source project
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//
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// Copyright (c) 2014 - 2017 Apple Inc. and the Swift project authors
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// Licensed under Apache License v2.0 with Runtime Library Exception
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//
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// See https://swift.org/LICENSE.txt for license information
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// See https://swift.org/CONTRIBUTORS.txt for the list of Swift project authors
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//
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//===----------------------------------------------------------------------===//
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#include "swift/Threading/Errors.h"
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#include <cstdio>
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#include "Error.h"
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#if SWIFT_CONCURRENCY_EMBEDDED
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/// In Embedded Swift, this entrypoint is provided to produce a fatal error. It
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/// allows hooking of the fatal error operation at the Swift level and avoids
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/// any dependencies on the C standard library to abort.
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extern "C" SWIFT_NORETURN void _swift_fatalError(const char *message);
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#endif
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// swift::fatalError is not exported from libswiftCore and not shared, so define
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// another internal function instead. In Embedded Swift, we do have a
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// `swift_fatalError` that we can call with a string. It does not formatting,
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// however.
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SWIFT_NORETURN
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SWIFT_VFORMAT(2)
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void swift::swift_Concurrency_fatalErrorv(uint32_t flags, const char *format,
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va_list val) {
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#if !SWIFT_CONCURRENCY_EMBEDDED
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vfprintf(stderr, format, val);
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abort();
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#else
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_swift_fatalError(format);
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#endif
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}
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SWIFT_NORETURN
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SWIFT_FORMAT(2, 3)
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void swift::swift_Concurrency_fatalError(uint32_t flags, const char *format,
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...) {
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va_list val;
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va_start(val, format);
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swift_Concurrency_fatalErrorv(flags, format, val);
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}
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