diff --git a/clang/lib/CodeGen/ModuleBuilder.cpp b/clang/lib/CodeGen/ModuleBuilder.cpp
index bc7acbc..6b81ce7 100644
--- a/clang/lib/CodeGen/ModuleBuilder.cpp
+++ b/clang/lib/CodeGen/ModuleBuilder.cpp
@@ -117,6 +117,8 @@
 
     virtual void HandleTranslationUnit(ASTContext &Ctx) {
       if (Diags.hasErrorOccurred()) {
+        if (Builder)
+          Builder->clear();
         M.reset();
         return;
       }