From 6f335f905c76187a7baf70a227fa843061473afe Mon Sep 17 00:00:00 2001
From: Chris Lattner <sabre@nondot.org>
Date: Tue, 26 Oct 2004 05:35:14 +0000
Subject: [PATCH] Fix the interpreter crash that Michael McCracken found

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17239 91177308-0d34-0410-b5e6-96231b3b80d8
---
 lib/ExecutionEngine/ExecutionEngine.cpp | 1 +
 1 file changed, 1 insertion(+)

diff --git a/lib/ExecutionEngine/ExecutionEngine.cpp b/lib/ExecutionEngine/ExecutionEngine.cpp
index 208f8e2e834..7fb4ad3ae81 100644
--- a/lib/ExecutionEngine/ExecutionEngine.cpp
+++ b/lib/ExecutionEngine/ExecutionEngine.cpp
@@ -170,6 +170,7 @@ void *ExecutionEngine::getPointerToGlobal(const GlobalValue *GV) {
 /// 
 GenericValue ExecutionEngine::getConstantValue(const Constant *C) {
   GenericValue Result;
+  if (isa<UndefValue>(C)) return Result;
 
   if (ConstantExpr *CE = const_cast<ConstantExpr*>(dyn_cast<ConstantExpr>(C))) {
     switch (CE->getOpcode()) {
-- 
2.34.1