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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 setting `lastIndex` after a zero-width
match
es6id: 21.2.5.6
info: |
7. If global is false, then
[...]
8. Else global is true,
[...]
g. Repeat,
i. Let result be RegExpExec(rx, S).
[...]
iv. Else result is not null,
1. Let matchStr be ToString(Get(result, "0")).
[...]
5. If matchStr is the empty String, then
[...]
d. Let setStatus be Set(rx, "lastIndex", nextIndex, true).
e. ReturnIfAbrupt(setStatus).
features: [Symbol.match]
---*/
var exec = function() {
var thisMatch = nextMatch;
if (thisMatch === null) {
return null;
}
nextMatch = null;
return {
get 0() {
Object.defineProperty(r, 'lastIndex', { writable: false });
return thisMatch;
}
};
};
var r, nextMatch;
r = /./g;
r.exec = exec;
nextMatch = '';
assert.throws(TypeError, function() {
r[Symbol.match]('');
});
reportCompare(0, 0);
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