- Add free list to be used for sweep phase of mark-sweep collector.

vm/raw_object.h

 // Copyright (c) 2011, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 #ifndef VM_RAW_OBJECT_H_
 #define VM_RAW_OBJECT_H_
 
 #include "vm/assert.h"
 #include "vm/globals.h"
 #include "vm/snapshot.h"
@@ skipping 234 matching lines @@
   ObjectKind instance_kind_;
   intptr_t type_arguments_instance_field_offset_;  // May be kNoTypeArguments.
   intptr_t next_field_offset_;  // Offset of then next instance field.
   intptr_t num_native_fields_;  // Number of native fields in class.
   int8_t class_state_;  // Of type ClassState.
   bool is_const_;
   bool is_interface_;
 
   friend class Object;
   friend class RawInstance;
+  friend RawClass* AllocateFakeClass();
 };
 
 
 class RawUnresolvedClass : public RawObject {
   RAW_HEAP_OBJECT_IMPLEMENTATION(UnresolvedClass);
 
   RawObject** from() {
     return reinterpret_cast<RawObject**>(&ptr()->qualifier_);
   }
   RawString* qualifier_;  // Qualifier for the identifier.
@@ skipping 589 matching lines @@
   intptr_t type_;  // Uninitialized, simple or complex.
   intptr_t flags_;  // Represents global/local, case insensitive, multiline.
 
   // Variable length data follows here.
   uint8_t data_[0];
 };
 
 }  // namespace dart
 
 #endif  // VM_RAW_OBJECT_H_