44 lines
908 B
JavaScript
44 lines
908 B
JavaScript
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// Copyright 2017 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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// Flags: --allow-natives-syntax
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var m = new Map();
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function C() { }
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// Make sure slack tracking kicks in and shrinks the default size to prevent
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// any further in-object properties.
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%CompleteInobjectSlackTracking(new C());
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function f(o) {
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o.x = true;
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}
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// Warm up {f}.
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f(new C());
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f(new C());
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var o = new C();
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%HeapObjectVerify(o);
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m.set(o, 1); // This creates hash code on o.
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// Add an out-of-object property.
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o.x = true;
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%HeapObjectVerify(o);
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// Delete the property (so we have no out-of-object properties).
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delete o.x;
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%HeapObjectVerify(o);
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// Ensure that growing the properties backing store in optimized code preserves
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// the hash.
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%OptimizeFunctionOnNextCall(f);
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f(o);
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%HeapObjectVerify(o);
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assertEquals(1, m.get(o));
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