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diff --git a/include/llvm/System/Signals.h b/include/llvm/System/Signals.h
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+++ b/include/llvm/System/Signals.h
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+//===- llvm/System/Signals.h - Signal Handling support ----------*- C++ -*-===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// This file defines some helpful functions for dealing with the possibility of
+// unix signals occuring while your program is running.
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_SYSTEM_SIGNALS_H
+#define LLVM_SYSTEM_SIGNALS_H
+
+#include "llvm/System/Path.h"
+
+namespace llvm {
+namespace sys {
+
+  /// This function registers signal handlers to ensure that if a signal gets
+  /// delivered that the named file is removed.
+  /// @brief Remove a file if a fatal signal occurs.
+  bool RemoveFileOnSignal(const Path &Filename, std::string* ErrMsg = 0);
+
+  /// When an error signal (such as SIBABRT or SIGSEGV) is delivered to the
+  /// process, print a stack trace and then exit.
+  /// @brief Print a stack trace if a fatal signal occurs.
+  void PrintStackTraceOnErrorSignal();
+
+  /// AddSignalHandler - Add a function to be called when an abort/kill signal
+  /// is delivered to the process.  The handler can have a cookie passed to it
+  /// to identify what instance of the handler it is.
+  void AddSignalHandler(void (*FnPtr)(void *), void *Cookie);
+
+  /// This function registers a function to be called when the user "interrupts"
+  /// the program (typically by pressing ctrl-c).  When the user interrupts the
+  /// program, the specified interrupt function is called instead of the program
+  /// being killed, and the interrupt function automatically disabled.  Note
+  /// that interrupt functions are not allowed to call any non-reentrant
+  /// functions.  An null interrupt function pointer disables the current
+  /// installed function.  Note also that the handler may be executed on a
+  /// different thread on some platforms.
+  /// @brief Register a function to be called when ctrl-c is pressed.
+  void SetInterruptFunction(void (*IF)());
+} // End sys namespace
+} // End llvm namespace
+
+#endif