Index: src/json-stringifier.h |
diff --git a/src/json-stringifier.h b/src/json-stringifier.h |
index 17c6b6f11141c52a589515f5d706371112411a8d..4f4230e7860157506c9ae3ef312760b58ada40dc 100644 |
--- a/src/json-stringifier.h |
+++ b/src/json-stringifier.h |
@@ -430,6 +430,7 @@ BasicJsonStringifier::Result BasicJsonStringifier::Serialize_( |
switch (HeapObject::cast(*object)->map()->instance_type()) { |
case HEAP_NUMBER_TYPE: |
+ case MUTABLE_HEAP_NUMBER_TYPE: |
if (deferred_string_key) SerializeDeferredKey(comma, key); |
return SerializeHeapNumber(Handle<HeapNumber>::cast(object)); |
case ODDBALL_TYPE: |