test/webkit/dfg-call-method-hit-watchpoint.js

// Copyright 2013 the V8 project authors. All rights reserved.
// Copyright (C) 2005, 2006, 2007, 2008, 2009 Apple Inc. All rights reserved.
//
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// modification, are permitted provided that the following conditions
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description(
"Tests correctness of method calls when the prototype is changed."
);

function Thingy() {
}

Thingy.prototype = {
    foo: function() {
        return 42;
    }
};

function callFoo(o) {
    return o.foo();
}

var o = new Thingy();

for (var i = 0; i < 200; ++i) {
    if (i == 150)
        Thingy.prototype.foo = function() { return 56; }
    var expected;
    if (i < 150)
        expected = 42;
    else
        expected = 56;
    shouldBe("callFoo(o)", "" + expected);
}