Index: lib/Support/FoldingSet.cpp
===================================================================
--- lib/Support/FoldingSet.cpp
+++ lib/Support/FoldingSet.cpp
@@ -54,8 +54,7 @@
   // depend on the host. It doesn't matter, however, because hashing on
   // pointer values is inherently unstable. Nothing should depend on the
   // ordering of nodes in the folding set.
-  Bits.append(reinterpret_cast<unsigned *>(&Ptr),
-              reinterpret_cast<unsigned *>(&Ptr+1));
+  AddInteger((unsigned long)Ptr);
 }
 void FoldingSetNodeID::AddInteger(signed I) {
   Bits.push_back(I);