Fix isolate bug introduced by generated code stubs

src/code-stubs.h

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 224 matching lines @@
 
   virtual int GetCodeKind() { return Code::STUB; }
 
  protected:
   // Generates the assembler code for the stub.
   virtual void Generate(MacroAssembler* masm) = 0;
 };
 
 
 struct CodeStubInterfaceDescriptor {
-  int number_of_register_params;
-  Register* register_params;
-  Handle<Code> deoptimization_handler;
+  CodeStubInterfaceDescriptor()
+      : register_param_count_(-1),
+        register_params_(NULL) { }
+  int register_param_count_;
+  Register* register_params_;
+  Handle<Code> deoptimization_handler_;
 };
 
 
 class HGraph;
 struct Register;
 class HydrogenCodeStub : public CodeStub {
  public:
   // Retrieve the code for the stub. Generate the code if needed.
   virtual Handle<Code> GenerateCode() = 0;
 
   virtual int GetCodeKind() { return Code::COMPILED_STUB; }
 
-  virtual CodeStubInterfaceDescriptor* GetInterfaceDescriptor(
-      Isolate* isolate) = 0;
+  CodeStubInterfaceDescriptor* GetInterfaceDescriptor(Isolate* isolate) {
+    return isolate->code_stub_interface_descriptor(MajorKey());
+  }
+
+  virtual void InitializeInterfaceDescriptor(
+      Isolate* isolate,
+      CodeStubInterfaceDescriptor* descriptor) = 0;
 
  protected:
   Handle<Code> CodeFromGraph(HGraph* graph);
 };
 
 
 // Helper interface to prepare to/restore after making runtime calls.
 class RuntimeCallHelper {
  public:
   virtual ~RuntimeCallHelper() {}
@@ skipping 805 matching lines @@
   bool is_js_array() const {
     return IsJSArrayBits::decode(bit_field_);
   }
 
   ElementsKind elements_kind() const {
     return ElementsKindBits::decode(bit_field_);
   }
 
   virtual Handle<Code> GenerateCode();
 
-  virtual CodeStubInterfaceDescriptor* GetInterfaceDescriptor(
-      Isolate* isolate);
+  virtual void InitializeInterfaceDescriptor(
+      Isolate* isolate,
+      CodeStubInterfaceDescriptor* descriptor);
 
  private:
   class IsJSArrayBits: public BitField<bool, 8, 1> {};
   class ElementsKindBits: public BitField<ElementsKind, 0, 8> {};
   uint32_t bit_field_;
 
   DISALLOW_COPY_AND_ASSIGN(KeyedLoadFastElementStub);
 };
 
 
@@ skipping 190 matching lines @@
 
   // The current function entry hook.
   static FunctionEntryHook entry_hook_;
 
   DISALLOW_COPY_AND_ASSIGN(ProfileEntryHookStub);
 };
 
 } }  // namespace v8::internal
 
 #endif  // V8_CODE_STUBS_H_