- Get handle vtable from a static table for predefined classes.

runtime/vm/class_table.cc

Index: runtime/vm/class_table.cc
===================================================================
--- runtime/vm/class_table.cc	(revision 8348)
+++ runtime/vm/class_table.cc	(working copy)
@@ -47,6 +47,14 @@
     ASSERT(table_[index] == 0);
     ASSERT(index < capacity_);
     table_[index] = cls.raw();
+    // Add the vtable for this predefined class into the static vtable registry
+    // if it has not been setup yet.
+    cpp_vtable cls_vtable = cls.handle_vtable();
+    cpp_vtable table_entry = Object::builtin_vtables_[index];
+    ASSERT((table_entry == 0) || (table_entry == cls_vtable));
+    if (table_entry == 0) {
+      Object::builtin_vtables_[index] = cls_vtable;
+    }
   } else {
     if (top_ == capacity_) {
       // Grow the capacity of the class table.