Let eval scope

src/parser.cc

Index: src/parser.cc
diff --git a/src/parser.cc b/src/parser.cc
index 45202cb3a82b922c7d487061cfff03578cc3a3c9..52936198f0f37647596db79f52c3b94b8074b0af 100644
--- a/src/parser.cc
+++ b/src/parser.cc
@@ -2019,7 +2019,8 @@ Variable* Parser::Declare(Declaration* declaration,
       declaration_scope->is_strict_eval_scope() ||
       declaration_scope->is_block_scope() ||
       declaration_scope->is_module_scope() ||
-      declaration_scope->is_script_scope()) {
+      declaration_scope->is_script_scope() ||
+      (declaration_scope->is_eval_scope() && IsLexicalVariableMode(mode))) {
     // Declare the variable in the declaration scope.
     var = declaration_scope->LookupLocal(name);
     if (var == NULL) {
@@ -2099,7 +2100,8 @@ Variable* Parser::Declare(Declaration* declaration,
     var = new (zone()) Variable(declaration_scope, name, mode, kind,
                                 kNeedsInitialization, kNotAssigned);
   } else if (declaration_scope->is_eval_scope() &&
-             is_sloppy(declaration_scope->language_mode())) {
+             is_sloppy(declaration_scope->language_mode()) &&
+             !IsLexicalVariableMode(mode)) {
     // For variable declarations in a sloppy eval scope the proxy is bound
     // to a lookup variable to force a dynamic declaration using the
     // DeclareLookupSlot runtime function.