From a83e6bc246410644cd17f34df93746d69abbfffc Mon Sep 17 00:00:00 2001
From: Ted Kremenek <kremenek@apple.com>
Date: Thu, 25 Oct 2007 18:42:52 +0000
Subject: Added special treatment of serializing NULL pointers.

llvm-svn: 43357
---
 llvm/lib/Bitcode/Reader/Deserialize.cpp | 5 +++++
 1 file changed, 5 insertions(+)

(limited to 'llvm/lib/Bitcode/Reader/Deserialize.cpp')

diff --git a/llvm/lib/Bitcode/Reader/Deserialize.cpp b/llvm/lib/Bitcode/Reader/Deserialize.cpp
index febb2d7cafc9..d1d6ef098f72 100644
--- a/llvm/lib/Bitcode/Reader/Deserialize.cpp
+++ b/llvm/lib/Bitcode/Reader/Deserialize.cpp
@@ -103,6 +103,11 @@ void Deserializer::RegisterPtr(unsigned PtrId,void* Ptr) {
 void Deserializer::ReadPtr(void*& PtrRef) {
   unsigned PtrId = ReadInt();
   
+  if (PtrId == 0) {
+    PtrRef = NULL;
+    return;
+  }  
+  
   BPatchEntry& E = BPatchMap[PtrId];
   
   if (E.Ptr == NULL) {
-- 
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