[parser] Skipping inner funcs: produce the same scopes / variables for loops.

src/parsing/preparser.cc

 // Copyright 2011 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include <cmath>
 
 #include "src/allocation.h"
 #include "src/base/logging.h"
 #include "src/conversions-inl.h"
 #include "src/conversions.h"
@@ skipping 289 matching lines @@
   return PreParserExpression::FromIdentifier(name, proxy, zone());
 }
 
 void PreParser::DeclareAndInitializeVariables(
     PreParserStatement block,
     const DeclarationDescriptor* declaration_descriptor,
     const DeclarationParsingResult::Declaration* declaration,
     ZoneList<const AstRawString*>* names, bool* ok) {
   if (declaration->pattern.variables_ != nullptr) {
     DCHECK(FLAG_lazy_inner_functions);
+    DCHECK(track_unresolved_variables_);
     for (auto variable : *(declaration->pattern.variables_)) {
       declaration_descriptor->scope->RemoveUnresolved(variable);
       scope()->DeclareVariableName(variable->raw_name(),
                                    declaration_descriptor->mode);
       if (names) {
         names->Add(variable->raw_name(), zone());
       }
     }
   }
 }
 
 #undef CHECK_OK
 #undef CHECK_OK_CUSTOM
 
 
 }  // namespace internal
 }  // namespace v8