diff --git a/lib/ExecutionEngine/Interpreter/Execution.cpp b/lib/ExecutionEngine/Interpreter/Execution.cpp
index e04f5642d06..c5facde8793 100644
--- a/lib/ExecutionEngine/Interpreter/Execution.cpp
+++ b/lib/ExecutionEngine/Interpreter/Execution.cpp
@@ -475,6 +475,10 @@ void Interpreter::visitReturnInst(ReturnInst &I) {
   popStackAndReturnValueToCaller(RetTy, Result);
 }
 
+void Interpreter::visitUnwindInst(UnwindInst &I) {
+  abort ();
+}
+
 void Interpreter::visitBranchInst(BranchInst &I) {
   ExecutionContext &SF = ECStack.back();
   BasicBlock *Dest;
diff --git a/lib/ExecutionEngine/Interpreter/Interpreter.h b/lib/ExecutionEngine/Interpreter/Interpreter.h
index 974aea89647..04baf367747 100644
--- a/lib/ExecutionEngine/Interpreter/Interpreter.h
+++ b/lib/ExecutionEngine/Interpreter/Interpreter.h
@@ -125,6 +125,7 @@ public:
   void visitCallSite(CallSite CS);
   void visitCallInst(CallInst &I) { visitCallSite (CallSite (&I)); }
   void visitInvokeInst(InvokeInst &I) { visitCallSite (CallSite (&I)); }
+  void visitUnwindInst(UnwindInst &I);
 
   void visitShl(ShiftInst &I);
   void visitShr(ShiftInst &I);