Debug a mystery crash bug in script streaming.

src/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_PARSER_H_
 #define V8_PARSER_H_
 
 #include "src/allocation.h"
 #include "src/ast.h"
 #include "src/compiler.h"  // For CachedDataMode
@@ skipping 832 matching lines @@
   const char* pending_error_message_;
   const AstRawString* pending_error_arg_;
   const char* pending_error_char_arg_;
   bool pending_error_is_reference_error_;
 
   // Other information which will be stored in Parser and moved to Isolate after
   // parsing.
   int use_counts_[v8::Isolate::kUseCounterFeatureCount];
   int total_preparse_skipped_;
   HistogramTimer* pre_parse_timer_;
+
+  // Temporary; for debugging. See Parser::SkipLazyFunctionBody. TODO(marja):
+  // remove this once done.
+  ScriptCompiler::CompileOptions debug_saved_compile_options_;
 };
 
 
 bool ParserTraits::IsFutureStrictReserved(
     const AstRawString* identifier) const {
   return identifier->IsOneByteEqualTo("yield") ||
          parser_->scanner()->IdentifierIsFutureStrictReserved(identifier);
 }
 
 
@@ skipping 58 matching lines @@
  private:
   static const int kLiteralTypeSlot = 0;
   static const int kElementsSlot = 1;
 
   DISALLOW_IMPLICIT_CONSTRUCTORS(CompileTimeValue);
 };
 
 } }  // namespace v8::internal
 
 #endif  // V8_PARSER_H_