diff --git a/lib/Basic/Builtins.cpp b/lib/Basic/Builtins.cpp
index 2662114..6cb5dab 100644
--- a/lib/Basic/Builtins.cpp
+++ b/lib/Basic/Builtins.cpp
@@ -32,6 +32,8 @@
 
 Builtin::Context::Context(const TargetInfo &Target) {
   // Get the target specific builtins from the target.
+  TSRecords = 0;
+  NumTSRecords = 0;
   Target.getTargetBuiltins(TSRecords, NumTSRecords);  
 }