Force checking of result on all functions in elements.h that return MaybeObject*.

src/objects.cc

 // 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 8603 matching lines @@
     MaybeObject* maybe = GetElementsTransitionMap(GetIsolate(), elements_kind);
     if (!maybe->To(&new_map)) return maybe;
   }
 
   FixedArrayBase* old_elements = elements();
   ElementsKind elements_kind = GetElementsKind();
   ElementsAccessor* accessor = ElementsAccessor::ForKind(elements_kind);
   ElementsKind to_kind = (elements_kind == FAST_SMI_ONLY_ELEMENTS)
       ? FAST_SMI_ONLY_ELEMENTS
       : FAST_ELEMENTS;
-  //  int copy_size = Min(old_elements_raw->length(), new_elements->length());
-  accessor->CopyElements(this, new_elements, to_kind);
+  { MaybeObject* maybe_obj =
+        accessor->CopyElements(this, new_elements, to_kind);
+    if (maybe_obj->IsFailure()) return maybe_obj;
+  }
   if (elements_kind != NON_STRICT_ARGUMENTS_ELEMENTS) {
     set_map_and_elements(new_map, new_elements);
   } else {
     FixedArray* parameter_map = FixedArray::cast(old_elements);
     parameter_map->set(1, new_elements);
   }
 
   if (FLAG_trace_elements_transitions) {
     PrintElementsTransition(stdout, elements_kind, old_elements,
                             GetElementsKind(), new_elements);
@@ skipping 23 matching lines @@
 
   Map* new_map;
   { MaybeObject* maybe_obj =
         GetElementsTransitionMap(heap->isolate(), FAST_DOUBLE_ELEMENTS);
     if (!maybe_obj->To(&new_map)) return maybe_obj;
   }
 
   FixedArrayBase* old_elements = elements();
   ElementsKind elements_kind = GetElementsKind();
   ElementsAccessor* accessor = ElementsAccessor::ForKind(elements_kind);
-  accessor->CopyElements(this, elems, FAST_DOUBLE_ELEMENTS);
+  { MaybeObject* maybe_obj =
+        accessor->CopyElements(this, elems, FAST_DOUBLE_ELEMENTS);
+    if (maybe_obj->IsFailure()) return maybe_obj;
+  }
   if (elements_kind != NON_STRICT_ARGUMENTS_ELEMENTS) {
     set_map_and_elements(new_map, elems);
   } else {
     FixedArray* parameter_map = FixedArray::cast(old_elements);
     parameter_map->set(1, elems);
   }
 
   if (FLAG_trace_elements_transitions) {
     PrintElementsTransition(stdout, elements_kind, old_elements,
                             FAST_DOUBLE_ELEMENTS, elems);
@@ skipping 4425 matching lines @@
   set_year(Smi::FromInt(year), SKIP_WRITE_BARRIER);
   set_month(Smi::FromInt(month), SKIP_WRITE_BARRIER);
   set_day(Smi::FromInt(day), SKIP_WRITE_BARRIER);
   set_weekday(Smi::FromInt(weekday), SKIP_WRITE_BARRIER);
   set_hour(Smi::FromInt(hour), SKIP_WRITE_BARRIER);
   set_min(Smi::FromInt(min), SKIP_WRITE_BARRIER);
   set_sec(Smi::FromInt(sec), SKIP_WRITE_BARRIER);
 }
 
 } }  // namespace v8::internal