Track computed literal properties.

src/heap.cc

Index: src/heap.cc
diff --git a/src/heap.cc b/src/heap.cc
index ba5b6903984c205a04417d7be075ac1e6f7ac860..1997ead12f3967ced3a244feab56a4432e536125 100644
--- a/src/heap.cc
+++ b/src/heap.cc
@@ -2844,6 +2844,13 @@ bool Heap::CreateInitialObjects() {
   }
   set_the_hole_value(Oddball::cast(obj));
 
+  { MaybeObject* maybe_obj = CreateOddball("uninitialized",
+                                           Smi::FromInt(-1),
+                                           Oddball::kUninitialized);
+    if (!maybe_obj->ToObject(&obj)) return false;
+  }
+  set_uninitialized_value(Oddball::cast(obj));
+
   { MaybeObject* maybe_obj = CreateOddball("arguments_marker",
                                            Smi::FromInt(-4),
                                            Oddball::kArgumentMarker);