Explicitly check for lazy parser when dealing with parser cache

src/parsing/parser.h

 // Copyright 2012 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.
 
 #ifndef V8_PARSING_PARSER_H_
 #define V8_PARSING_PARSER_H_
 
 #include "src/ast/ast.h"
 #include "src/ast/scopes.h"
 #include "src/parsing/parser-base.h"
@@ skipping 229 matching lines @@
 
   // Called by ParseProgram after setting up the scanner.
   FunctionLiteral* DoParseProgram(ParseInfo* info);
 
   void SetCachedData(ParseInfo* info);
 
   ScriptCompiler::CompileOptions compile_options() const {
     return compile_options_;
   }
   bool consume_cached_parse_data() const {
-    return compile_options_ == ScriptCompiler::kConsumeParserCache &&
-           cached_parse_data_ != NULL;
+    return allow_lazy() &&
+           compile_options_ == ScriptCompiler::kConsumeParserCache;
   }
   bool produce_cached_parse_data() const {
-    return compile_options_ == ScriptCompiler::kProduceParserCache;
+    return allow_lazy() &&
+           compile_options_ == ScriptCompiler::kProduceParserCache;
   }
 
   void ParseModuleItemList(ZoneList<Statement*>* body, bool* ok);
   Statement* ParseModuleItem(bool* ok);
   const AstRawString* ParseModuleSpecifier(bool* ok);
   void ParseImportDeclaration(bool* ok);
   Statement* ParseExportDeclaration(bool* ok);
   Statement* ParseExportDefault(bool* ok);
   void ParseExportClause(ZoneList<const AstRawString*>* export_names,
                          ZoneList<Scanner::Location>* export_locations,
@@ skipping 832 matching lines @@
   int total_preparse_skipped_;
   HistogramTimer* pre_parse_timer_;
 
   bool parsing_on_main_thread_;
 };
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_PARSING_PARSER_H_