From ddc4860c1d6e06db2db5c08a01dc1ff3293d9daf Mon Sep 17 00:00:00 2001
From: Chris Lattner <sabre@nondot.org>
Date: Mon, 22 Nov 2004 19:15:27 +0000
Subject: [PATCH] Fix test/Regression/CFrontend/2003-11-01-EmptyStructCrash.c

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18115 91177308-0d34-0410-b5e6-96231b3b80d8
---
 lib/VMCore/ConstantFold.cpp | 1 +
 1 file changed, 1 insertion(+)

diff --git a/lib/VMCore/ConstantFold.cpp b/lib/VMCore/ConstantFold.cpp
index 02b7fe2975a..e2080642ca6 100644
--- a/lib/VMCore/ConstantFold.cpp
+++ b/lib/VMCore/ConstantFold.cpp
@@ -574,6 +574,7 @@ Constant *llvm::ConstantFoldCastInstruction(const Constant *V,
       const Type *ElTy = PTy->getElementType();
       while (ElTy != DPTy->getElementType()) {
         if (const StructType *STy = dyn_cast<StructType>(ElTy)) {
+          if (STy->getNumElements() == 0) break;
           ElTy = STy->getElementType(0);
           IdxList.push_back(Constant::getNullValue(Type::UIntTy));
         } else if (const SequentialType *STy = dyn_cast<SequentialType>(ElTy)) {