mirror of
https://github.com/tc39/test262.git
synced 2025-11-04 05:33:50 +01:00
27 lines
681 B
JavaScript
27 lines
681 B
JavaScript
// Copyright (C) 2015 André Bargull. All rights reserved.
|
|
// This code is governed by the BSD license found in the LICENSE file.
|
|
|
|
/*---
|
|
info: Compound Assignment Operator evaluates its operands from left to right.
|
|
description: >
|
|
The left-hand side expression is evaluated before the right-hand side.
|
|
Left-hand side expression is MemberExpression: base[prop]. ToPropertyKey(prop)
|
|
is only called once.
|
|
Check operator is "x <<= y".
|
|
---*/
|
|
|
|
var propKeyEvaluated = false;
|
|
var base = {};
|
|
var prop = {
|
|
toString: function() {
|
|
assert(!propKeyEvaluated);
|
|
propKeyEvaluated = true;
|
|
return "";
|
|
}
|
|
};
|
|
var expr = function() {
|
|
return 0;
|
|
};
|
|
|
|
base[prop] <<= expr();
|