Basic support for tracking smi-only arrays on ia32.

src/liveobjectlist.cc

Index: src/liveobjectlist.cc
diff --git a/src/liveobjectlist.cc b/src/liveobjectlist.cc
index 54a2331f1d1b66338f656ebb16dcf00e905f0fd5..d62c4d17639203c2b1fd48f79c1191d56797dc25 100644
--- a/src/liveobjectlist.cc
+++ b/src/liveobjectlist.cc
@@ -1336,7 +1336,9 @@ MaybeObject* LiveObjectList::DumpPrivate(DumpWriter* writer,
   // Allocate the JSArray of the elements.
   Handle<JSObject> elements = factory->NewJSObject(isolate->array_function());
   if (elements->IsFailure()) return Object::cast(*elements);
-  Handle<JSArray>::cast(elements)->SetContent(*elements_arr);
+
+  maybe_result = Handle<JSArray>::cast(elements)->SetContent(*elements_arr);
+  if (maybe_result->IsFailure()) return maybe_result;
 
   // Set body.elements.
   Handle<String> elements_sym = factory->LookupAsciiSymbol("elements");
@@ -1462,7 +1464,9 @@ MaybeObject* LiveObjectList::SummarizePrivate(SummaryWriter* writer,
   Handle<JSObject> summary_obj =
     factory->NewJSObject(isolate->array_function());
   if (summary_obj->IsFailure()) return Object::cast(*summary_obj);
-  Handle<JSArray>::cast(summary_obj)->SetContent(*summary_arr);
+
+  maybe_result = Handle<JSArray>::cast(summary_obj)->SetContent(*summary_arr);
+  if (maybe_result->IsFailure()) return maybe_result;
 
   // Create the body object.
   Handle<JSObject> body = factory->NewJSObject(isolate->object_function());
@@ -1589,7 +1593,9 @@ MaybeObject* LiveObjectList::Info(int start_idx, int dump_limit) {
 
   // Return the result as a JS array.
   Handle<JSObject> lols = factory->NewJSObject(isolate->array_function());
-  Handle<JSArray>::cast(lols)->SetContent(*list);
+
+  maybe_result = Handle<JSArray>::cast(lols)->SetContent(*list);
+  if (maybe_result->IsFailure()) return maybe_result;
 
   Handle<JSObject> result = factory->NewJSObject(isolate->object_function());
   if (result->IsFailure()) return Object::cast(*result);