Index: test/mjsunit/regress/regress-crbug-706642.js |
diff --git a/test/mjsunit/regress/regress-crbug-706642.js b/test/mjsunit/regress/regress-crbug-706642.js |
new file mode 100644 |
index 0000000000000000000000000000000000000000..4467c684951cd7806e76cf0367083a2e662582f2 |
--- /dev/null |
+++ b/test/mjsunit/regress/regress-crbug-706642.js |
@@ -0,0 +1,37 @@ |
+// Copyright 2017 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. |
+ |
+// Flags: --allow-natives-syntax |
+ |
+class A extends Object { |
+ constructor(arg) { |
+ super(); |
+ superclass_counter++; |
+ if (superclass_counter === 3) { |
+ return 1; |
+ } |
+ } |
+} |
+ |
+class B extends A { |
+ constructor() { |
+ let x = super(123); |
+ return x.a; |
+ } |
+} |
+ |
+var superclass_counter = 0; |
+var observer = new Proxy(A, { |
+ get(target, property, receiver) { |
+ if (property === 'prototype') { |
+ %DeoptimizeFunction(B); |
+ } |
+ return Reflect.get(target, property, receiver); |
+ } |
+}); |
+ |
+Reflect.construct(B, [], observer); |
+Reflect.construct(B, [], observer); |
+%OptimizeFunctionOnNextCall(B); |
+assertThrows(() => Reflect.construct(B, [], observer), TypeError); |