Add a new function

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11630 91177308-0d34-0410-b5e6-96231b3b80d8

include/llvm/System/Signals.h

@@ -24,6 +24,9 @@ namespace llvm {
   ///
   void RemoveFileOnSignal(const std::string &Filename);
 
+  /// PrintStackTraceOnErrorSignal - When an error signal (such as SIBABRT or
+  /// SIGSEGV) is delivered to the process, print a stack trace and then exit.
+  void PrintStackTraceOnErrorSignal();
 } // End llvm namespace
 
 #endif