1// Copyright 2013 the V8 project authors. All rights reserved.
2// Copyright (C) 2005, 2006, 2007, 2008, 2009 Apple Inc. All rights reserved.
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23
24description(
25"This tests that a structure clobber in a basic block that does not touch a live variable causes that variable's structure to be correctly clobbered."
26);
27
28var clobberedObject;
29
30function bar() {
31    if (!clobberedObject)
32        return;
33    delete clobberedObject.f;
34    clobberedObject.g = 42;
35}
36
37function foo(p, o_) {
38    var o = o_.f; // Force this block to have a SetLocal.
39    var x = o.f;
40    if (p)
41        bar();
42    return x + o.f;
43}
44
45var expected = 2;
46
47for (var i = 0; i < 200; ++i) {
48    var object = {f:1};
49    var predicate = true;
50    if (i >= 150) {
51        clobberedObject = object;
52        expected = 0/0; // "NaN"
53    }
54    shouldBe("foo(predicate, {f:object})", "" + expected);
55}
56