| // Copyright (C) 2016 the V8 project authors. All rights reserved. |
| // This code is governed by the BSD license found in the LICENSE file. |
| /*--- |
| es6id: 22.1.3.23 |
| esid: sec-array.prototype.slice |
| description: The value `-0` is converted to `0` |
| info: | |
| [...] |
| 3. Let relativeStart be ? ToInteger(start). |
| 4. If relativeStart < 0, let k be max((len + relativeStart), 0); else let k |
| be min(relativeStart, len). |
| 5. If end is undefined, let relativeEnd be len; else let relativeEnd be ? |
| ToInteger(end). |
| 6. If relativeEnd < 0, let final be max((len + relativeEnd), 0); else let |
| final be min(relativeEnd, len). |
| 7. Let count be max(final - k, 0). |
| 8. Let A be ? ArraySpeciesCreate(O, count). |
| [...] |
| |
| 9.4.2.3 ArraySpeciesCreate |
| |
| [...] |
| 2. If length is -0, let length be +0. |
| [...] |
| 5. Let C be ? Get(originalArray, "constructor"). |
| [...] |
| 7. If Type(C) is Object, then |
| a. Let C be ? Get(C, @@species). |
| b. If C is null, let C be undefined. |
| [...] |
| 10. Return ? Construct(C, « length »). |
| features: [Symbol.species] |
| ---*/ |
| |
| var args; |
| var Ctor = function() { |
| args = arguments; |
| }; |
| var a = []; |
| a.constructor = {}; |
| a.constructor[Symbol.species] = Ctor; |
| |
| a.slice(0, -0); |
| |
| assert.sameValue(args.length, 1); |
| assert.sameValue(args[0], 0); |