26 lines
597 B
JavaScript
26 lines
597 B
JavaScript
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// Copyright 2019 the V8 project authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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var p = new Proxy({a: 1, b: 2}, {
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ownKeys() { return ['a', 'b']; }
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});
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// clone and return a
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function f(a) {
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var y = {...a}
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return y;
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}
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// Call with different maps to force it into megamorphic state
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f({a: 1, b: 2});
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f({a1: 1, b1: 3});
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f({a2: 1, b2: 3});
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f({a3: 1, b3: 4});
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f({a4: 1, b4: 5});
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// Test that y was initialized correctly in the slow path
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var clone = f(p);
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assertEquals(clone.a, 1);
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assertEquals(clone.b, 2);
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