1 files changed, 17 insertions, 0 deletions
diff --git a/deps/v8/test/mjsunit/es9/regress/regress-866282.js b/deps/v8/test/mjsunit/es9/regress/regress-866282.js
new file mode 100644
index 0000000000..ae23c05c27
--- /dev/null
+++ b/deps/v8/test/mjsunit/es9/regress/regress-866282.js
@@ -0,0 +1,17 @@
+// Copyright 2018 the V8 project authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+// Runtime_ObjectCloneIC_Slow() source argument must be a HeapObject handle,
+// because undefined/null are allowed.
+function spread(o) { return { ...o }; }
+
+// Transition to MEGAMORPHIC
+assertEquals({}, spread(new function C1() {}));
+assertEquals({}, spread(new function C2() {}));
+assertEquals({}, spread(new function C3() {}));
+assertEquals({}, spread(new function C4() {}));
+assertEquals({}, spread(new function C5() {}));
+
+// Trigger Runtime_ObjectCloneIC_Slow() with a non-JSReceiver.
+assertEquals({}, spread(undefined));