Index: src/json-stringifier.h |
diff --git a/src/json-stringifier.h b/src/json-stringifier.h |
index 3926969f650745a800370e513547e765d1e31280..ddcdbedc3f4ba1c6564f169c6aea5b12acd9cbf1 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: |