blob: cdb68517227e30f52fae905b0b9bb04c2d0685fe (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
|
<!DOCTYPE HTML>
<html>
<!--
https://bugzilla.mozilla.org/show_bug.cgi?id=1863543
-->
<head>
<meta charset="utf-8">
<title>Test for Bug 1863543</title>
<script src="/tests/SimpleTest/SimpleTest.js"></script>
<link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
</head>
<body>
<a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=1863543">Mozilla Bug 1863543</a>
<p id="display"></p>
<pre id="test">
<script>
// Test for JIT IC guards for missing properties on the HTMLDocument DOM proxy.
function testMissingProps() {
var doc = document;
var docProto = Object.getPrototypeOf(doc);
for (var i = 0; i < 30; i++) {
if (i === 15) {
// Add shadowing expando property.
doc.unusedPropName1 = 12;
}
if (i === 20) {
// Add prototype property.
docProto.unusedPropName2 = 34;
}
if (i == 25) {
// Add shadowing element.
var el = document.createElement("object");
el.id = "unusedPropName3";
document.body.appendChild(el);
}
var v1 = doc.unusedPropName1;
var v2 = doc.unusedPropName2;
var v3 = doc.unusedPropName3;
is(v1, i >= 15 ? 12 : undefined);
is(v2, i >= 20 ? 34 : undefined);
is(v3, i >= 25 ? el : undefined);
}
}
testMissingProps();
</script>
</pre>
</body>
</html>
|
