Index: runtime/vm/isolate.cc |
diff --git a/runtime/vm/isolate.cc b/runtime/vm/isolate.cc |
index d10bef9a2fd899fb83c032212b6206827cc3a69c..ac180a6d57f5302149217c361ae9a6c527ea9779 100644 |
--- a/runtime/vm/isolate.cc |
+++ b/runtime/vm/isolate.cc |
@@ -339,6 +339,7 @@ Isolate::Isolate() |
REUSABLE_HANDLE_LIST(REUSABLE_HANDLE_SCOPE_INIT) |
reusable_handles_() { |
set_vm_tag(VMTag::kIdleTagId); |
+ set_user_tag(reinterpret_cast<uword>(Object::null())); |
} |
#undef REUSABLE_HANDLE_SCOPE_INIT |
#undef REUSABLE_HANDLE_INITIALIZERS |