JSTests/test262/test/built-ins/RegExp/prototype/Symbol.replace/get-exec-err.js

// 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 there is an error thrown while accessing the `exec` method of
    "global" instances
es6id: 21.2.5.8
info: |
    [...]
    13. Repeat, while done is false
        a. Let result be RegExpExec(rx, S).
 
    ES6 21.2.5.2.1 Runtime Semantics: RegExpExec ( R, S )

    [...]
    3. Let exec be Get(R, "exec").
    4. ReturnIfAbrupt(exec).
features: [Symbol.replace]
---*/

var r = { global: true };
Object.defineProperty(r, 'exec', {
  get: function() {
    throw new Test262Error();
  }
});

assert.throws(Test262Error, function() {
  RegExp.prototype[Symbol.replace].call(r, '', '');
});

assert.sameValue(r.lastIndex, 0, 'Error thrown after setting `lastIndex`');