js/src/tests/test262/built-ins/RegExp/prototype/Symbol.replace/g-init-lastindex-err.js


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// Copyright (C) 2015 the V8 project authors. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.

/*---
description: >
     Behavior when error is thrown while initializing `lastIndex` property for
     "global" instances
es6id: 21.2.5.8
info: |
    21.2.5.8 RegExp.prototype [ @@replace ] ( string, replaceValue )

    [...]
    10. If global is true, then
        [...]
        c. Let setStatus be Set(rx, "lastIndex", 0, true).
        d. ReturnIfAbrupt(setStatus).
features: [Symbol.replace]
---*/

var r = /./g;

// Avoid false positives from unrelated TypeErrors
r[Symbol.replace]('x', 'x');

Object.defineProperty(r, 'lastIndex', { writable: false });

assert.throws(TypeError, function() {
  r[Symbol.replace]('x', 'x');
});

reportCompare(0, 0);