Index: clang/lib/Interpreter/IncrementalParser.cpp
===================================================================
--- clang/lib/Interpreter/IncrementalParser.cpp
+++ clang/lib/Interpreter/IncrementalParser.cpp
@@ -188,7 +188,7 @@
     S.TUScope->setEntity(PreviousTU);
 
     // Clean up the lookup table
-    if (StoredDeclsMap *Map = PreviousTU->getLookupPtr()) {
+    if (StoredDeclsMap *Map = PreviousTU->getPrimaryContext()->getLookupPtr()) {
       for (auto I = Map->begin(); I != Map->end(); ++I) {
         StoredDeclsList &List = I->second;
         DeclContextLookupResult R = List.getLookupResult();
Index: clang/test/Interpreter/execute.cpp
===================================================================
--- clang/test/Interpreter/execute.cpp
+++ clang/test/Interpreter/execute.cpp
@@ -1,3 +1,4 @@
+// RUN: clang-repl "int x = 10;" "int y=7; err;" "int y = 10;"
 // RUN: clang-repl "int i = 10;" 'extern "C" int printf(const char*,...);' \
 // RUN:            'auto r1 = printf("i = %d\n", i);' | FileCheck --check-prefix=CHECK-DRIVER %s
 // REQUIRES: host-supports-jit