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Diffstat (limited to '')
-rw-r--r-- | js/src/tests/test262/built-ins/Object/prototype/__proto__/set-cycle-shadowed.js | 37 |
1 files changed, 37 insertions, 0 deletions
diff --git a/js/src/tests/test262/built-ins/Object/prototype/__proto__/set-cycle-shadowed.js b/js/src/tests/test262/built-ins/Object/prototype/__proto__/set-cycle-shadowed.js new file mode 100644 index 0000000000..ca372a8165 --- /dev/null +++ b/js/src/tests/test262/built-ins/Object/prototype/__proto__/set-cycle-shadowed.js @@ -0,0 +1,37 @@ +// Copyright (C) 2016 the V8 project authors. All rights reserved. +// This code is governed by the BSD license found in the LICENSE file. +/*--- +esid: sec-object.prototype.__proto__ +es6id: B.2.2.1 +description: > + Cycles are not detected when a Proxy exotic object exists in the prototype + chain +info: | + [...] + 4. Let status be ? O.[[SetPrototypeOf]](proto). + 5. If status is false, throw a TypeError exception. + + 9.1.2.1 OrdinarySetPrototypeOf + + [...] + 6. Let p be V. + 7. Let done be false. + 8. Repeat while done is false, + a. If p is null, let done be true. + b. Else if SameValue(p, O) is true, return false. + c. Else, + i. If the [[GetPrototypeOf]] internal method of p is not the ordinary + object internal method defined in 9.1.1, let done be true. + ii. Else, let p be the value of p's [[Prototype]] internal slot. +features: [__proto__] +---*/ + +var root = {}; +var intermediary = new Proxy(Object.create(root), {}); +var leaf = Object.create(intermediary); + +root.__proto__ = leaf; + +assert.sameValue(Object.getPrototypeOf(root), leaf); + +reportCompare(0, 0); |