Fix Context::declaration_context to account for script contexts.

src/contexts.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 "src/v8.h"
 
 #include "src/bootstrapper.h"
 #include "src/debug.h"
 #include "src/scopeinfo.h"
 
@@ skipping 37 matching lines @@
       result->slot_index = slot_index;
       return true;
     }
   }
   return false;
 }
 
 
 Context* Context::declaration_context() {
   Context* current = this;
-  while (!current->IsFunctionContext() && !current->IsNativeContext()) {
+  while (!current->IsFunctionContext() && !current->IsNativeContext() &&
+         !current->IsScriptContext()) {
     current = current->previous();
     DCHECK(current->closure() == closure());
   }
   return current;
 }
 
 
 JSBuiltinsObject* Context::builtins() {
   GlobalObject* object = global_object();
   if (object->IsJSGlobalObject()) {
@@ skipping 419 matching lines @@
 bool Context::IsBootstrappingOrGlobalObject(Isolate* isolate, Object* object) {
   // During bootstrapping we allow all objects to pass as global
   // objects. This is necessary to fix circular dependencies.
   return isolate->heap()->gc_state() != Heap::NOT_IN_GC ||
       isolate->bootstrapper()->IsActive() ||
       object->IsGlobalObject();
 }
 #endif
 
 } }  // namespace v8::internal