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// Copyright 2019 the V8 project authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
// Flags: --always-opt
__v_1 = {};
__v_1.__defineGetter__('x', function () { });
__proto__ = __v_1;
function __f_4() {
__v_1 = {};
}
function __f_3() {
'use strict';
x = 42;
}
__f_4()
try {
__f_3();
} catch (e) { }
__proto__ = __v_1;
assertThrows(() => __f_3(), ReferenceError);
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