Index: clang/lib/Interpreter/IncrementalParser.cpp
===================================================================
--- clang/lib/Interpreter/IncrementalParser.cpp
+++ clang/lib/Interpreter/IncrementalParser.cpp
@@ -134,7 +134,10 @@
   P->Initialize();
 }
 
-IncrementalParser::~IncrementalParser() { Act->FinalizeAction(); }
+IncrementalParser::~IncrementalParser() {
+  P.reset();
+  Act->FinalizeAction(); 
+}
 
 llvm::Expected<PartialTranslationUnit &>
 IncrementalParser::ParseOrWrapTopLevelDecl() {
Index: clang/lib/Interpreter/Interpreter.cpp
===================================================================
--- clang/lib/Interpreter/Interpreter.cpp
+++ clang/lib/Interpreter/Interpreter.cpp
@@ -116,6 +116,9 @@
   // times, reusing the same AST.
   Clang->getCodeGenOpts().ClearASTBeforeBackend = false;
 
+  Clang->getFrontendOpts().DisableFree = false;
+  Clang->getCodeGenOpts().DisableFree = false;
+
   return std::move(Clang);
 }