| // Copyright (C) 2015 the V8 project authors. All rights reserved. |
| // This code is governed by the BSD license found in the LICENSE file. |
| /*--- |
| esid: sec-array.prototype.copywithin |
| es6id: 22.1.3.3 |
| description: > |
| Return abrupt from getting property value - Get(O, fromKey). |
| info: | |
| 22.1.3.3 Array.prototype.copyWithin (target, start [ , end ] ) |
| |
| ... |
| 8. Let relativeStart be ToInteger(start). |
| 9. ReturnIfAbrupt(relativeStart). |
| 10. If relativeStart < 0, let from be max((len + relativeStart),0); else let |
| from be min(relativeStart, len). |
| ... |
| 17. Repeat, while count > 0 |
| a. Let fromKey be ToString(from). |
| b. Let toKey be ToString(to). |
| c. Let fromPresent be HasProperty(O, fromKey). |
| d. ReturnIfAbrupt(fromPresent). |
| e. If fromPresent is true, then |
| i. Let fromVal be Get(O, fromKey). |
| ii. ReturnIfAbrupt(fromVal). |
| ... |
| ---*/ |
| |
| var o = { |
| length: 1 |
| }; |
| |
| Object.defineProperty(o, '0', { |
| get: function() { |
| throw new Test262Error(); |
| } |
| }); |
| |
| assert.throws(Test262Error, function() { |
| Array.prototype.copyWithin.call(o, 0, 0); |
| }); |