Handlify Object::GetPrototype and (most) callers.

src/string-stream.cc

Index: src/string-stream.cc
diff --git a/src/string-stream.cc b/src/string-stream.cc
index 93eb2229e58db1b817ab187537fe3608c979d86d..1f7ede7e67b377b580d948354798eae0b8fad916 100644
--- a/src/string-stream.cc
+++ b/src/string-stream.cc
@@ -502,14 +502,17 @@ void StringStream::PrintFunction(Object* f, Object* receiver, Code** code) {
 
 
 void StringStream::PrintPrototype(JSFunction* fun, Object* receiver) {
+  Isolate* isolate = fun->GetIsolate();
+  DisallowHeapAllocation no_alloc;
+  HandleScope scope(isolate);
+
   Object* name = fun->shared()->name();
   bool print_name = false;
-  Isolate* isolate = fun->GetIsolate();
-  for (Object* p = receiver;
-       p != isolate->heap()->null_value();
-       p = p->GetPrototype(isolate)) {
+  for (Handle<Object> p(receiver, isolate);
+       !p->IsNull();
+       p = Object::GetPrototype(isolate, p)) {

[Yang, 2014/04/15 13:10:48]

Please don't handlify here.

     if (p->IsJSObject()) {
-      Object* key = JSObject::cast(p)->SlowReverseLookup(fun);
+      Object* key = JSObject::cast(*p)->SlowReverseLookup(fun);
       if (key != isolate->heap()->undefined_value()) {
         if (!name->IsString() ||
             !key->IsString() ||