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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.
/*---
es6id: 21.2.5.9
description: >
Behavior when error thrown while restoring `lastIndex` property following
match execution
info: |
[...]
8. If SameValue(currentLastIndex, previousLastIndex) is false, then
a. Perform ? Set(rx, "lastIndex", previousLastIndex, true).
features: [Symbol.search]
---*/
var callCount;
var poisonedLastIndex = {
get lastIndex() { return this.lastIndex_; },
set lastIndex(_) {
if (callCount === 1) {
throw new Test262Error();
}
this.lastIndex_ = _;
},
exec: function() {
callCount += 1;
return null;
}
};
var nonWritableLastIndex = {
exec: function() {
Object.defineProperty(
nonWritableLastIndex, 'lastIndex', { writable: false }
);
callCount += 1;
return null;
}
};
callCount = 0;
assert.throws(Test262Error, function() {
RegExp.prototype[Symbol.search].call(poisonedLastIndex);
});
assert.sameValue(callCount, 1, 'Match executed ("poisoned" lastIndex)');
callCount = 0;
assert.throws(TypeError, function() {
RegExp.prototype[Symbol.search].call(nonWritableLastIndex);
});
assert.sameValue(callCount, 1, 'Match executed (non-writable lastIndex)');
reportCompare(0, 0);
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