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//===--- Exception.cpp - Exception support --------------------------------===//
//
// This source file is part of the Swift.org open source project
//
// Copyright (c) 2014 - 2017 Apple Inc. and the Swift project authors
// Licensed under Apache License v2.0 with Runtime Library Exception
//
// See https://swift.org/LICENSE.txt for license information
// See https://swift.org/CONTRIBUTORS.txt for the list of Swift project authors
//
//===----------------------------------------------------------------------===//
//
// Swift doesn't support exception handlers, but might call code that uses
// exceptions, and when they leak out into Swift code, we want to trap them.
//
// To that end, we have our own exception personality routine, which we use
// to trap exceptions and terminate.
//
//===----------------------------------------------------------------------===//
#if defined(__ELF__) || defined(__APPLE__)
#include <exception>
#include <cstdio>
#include <unwind.h>
#include "swift/Runtime/Debug.h"
#include "swift/Runtime/Exception.h"
using namespace swift;
extern "C" void __cxa_begin_catch(void *);
SWIFT_RUNTIME_STDLIB_API _Unwind_Reason_Code
_swift_exceptionPersonality(int version,
_Unwind_Action actions,
uint64_t exceptionClass,
struct _Unwind_Exception *exceptionObject,
struct _Unwind_Context *context)
{
#if __cpp_exceptions
// Handle exceptions by catching them and calling std::terminate().
// This, in turn, will trigger the unhandled exception routine in the
// C++ runtime.
__cxa_begin_catch(exceptionObject);
std::terminate();
#else
fatalError(0,
"C++ exception handling detected but the Swift runtime was "
"compiled with exceptions disabled\n");
#endif
return _URC_FATAL_PHASE1_ERROR;
}
#endif /* defined(__ELF__) || defined(__APPLE__) */
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