Added special treatment of serializing NULL pointers.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43357 91177308-0d34-0410-b5e6-96231b3b80d8

2 files changed, 5 insertions, 1 deletions

diff --git a/include/llvm/Bitcode/Deserialize.h b/include/llvm/Bitcode/Deserialize.h
index f5adcffe25..164c70a9af 100644
--- a/include/llvm/Bitcode/Deserialize.h
+++ b/include/llvm/Bitcode/Deserialize.h
@@ -86,6 +86,10 @@ public:
   template <typename T>
   inline T* ReadOwnedPtr() {    
     unsigned PtrId = ReadInt();
+
+    if (PtrId == 0)
+      return NULL;
+    
     T* x = SerializeTrait<T>::Materialize(*this);
     RegisterPtr(PtrId,x);
     return x;
diff --git a/include/llvm/Bitcode/Serialize.h b/include/llvm/Bitcode/Serialize.h
index dc1fe646f2..72aac9d0ba 100644
--- a/include/llvm/Bitcode/Serialize.h
+++ b/include/llvm/Bitcode/Serialize.h
@@ -47,7 +47,7 @@ public:
   template <typename T>
   void EmitOwnedPtr(T* ptr) {
     EmitPtr(ptr);
-    SerializeTrait<T>::Emit(*this,*ptr);    
+    if (ptr) SerializeTrait<T>::Emit(*this,*ptr);
   }
 
   void Flush() { if (inRecord()) EmitRecord(); }