[Webkit-unassigned] [Bug 17076] New: Document Tree isn't surviving long enough (Acid3 bug)
bugzilla-daemon at webkit.org
bugzilla-daemon at webkit.org
Tue Jan 29 14:40:36 PST 2008
http://bugs.webkit.org/show_bug.cgi?id=17076
Summary: Document Tree isn't surviving long enough (Acid3 bug)
Product: WebKit
Version: 525+ (Nightly build)
Platform: Macintosh
OS/Version: Mac OS X 10.5
Status: NEW
Keywords: NeedsReduction
Severity: Normal
Priority: P2
Component: New Bugs
AssignedTo: webkit-unassigned at lists.webkit.org
ReportedBy: eric at webkit.org
CC: mjs at apple.com
Document Tree isn't surviving long enough (Acid3 bug)
This will need some reduction.
function () {
// test 26: check that document tree survives while still accessible
var d;
// e1 - an element that's in a document
d = document.implementation.createDocument(null, null, null);
var e1 = d.createElement('test');
d.appendChild(d.createElement('root'));
d.documentElement.appendChild(e1);
assert(e1.parentNode, "e1 - parent element doesn't exist");
assert(e1.parentNode.ownerDocument, "e1 - document doesn't exist");
// e2 - an element that's not in a document
d = document.implementation.createDocument(null, null, null);
var e2 = d.createElement('test');
d.createElement('root').appendChild(e2);
assert(e2.parentNode, "e2 - parent element doesn't exist");
assert(e2.parentNode.ownerDocument, "e2 - document doesn't exist");
// now try to decouple them
d = null;
kungFuDeathGrip = [e1, e2];
assert(e1.parentNode, "e1 - parent element doesn't exist after dropping
reference to document");
assert(e1.parentNode.ownerDocument, "e1 - document doesn't exist after
dropping reference to document");
assert(e2.parentNode, "e2 - parent element doesn't exist after dropping
reference to document");
assert(e2.parentNode.ownerDocument, "e2 - document doesn't exist after
dropping reference to document");
var loops = ((new Date().valueOf() - 1.1e12) / 32e9) * 0x500; //
increases linearly over time
for (var i = 0; i < loops; i += 1) {
// we want to force a GC here, so we use up lots of memory
// we take the opportunity to sneak in a perf test to make DOM and JS
stuff faster...
d = new Date();
d = new (function (x) { return { toString: function () { return
x.toString() } } })(d.valueOf());
d = document.createTextNode("iteration " + i + " at " + d);
document.createElement('a').appendChild(d);
d = d.parentNode;
document.body.insertBefore(d,
document.getElementById('bucket1').parentNode);
assert(document.getElementById('bucket2').nextSibling.parentNode.previousSibling.firstChild.data.match(/AT\W/i),
"iteration " + i + " failed");
d.setAttribute('class', d.textContent);
document.body.removeChild(d);
}
assert(e1.parentNode, "e1 - parent element doesn't exist after looping");
assert(e1.parentNode.ownerDocument, "e1 - document doesn't exist after
looping");
assertEquals(e1.parentNode.ownerDocument.nodeType, 9, "e1 - document node
type has wrong node type");
assert(e2.parentNode, "e2 - parent element doesn't exist after looping");
assert(e2.parentNode.ownerDocument, "e2 - document doesn't exist after
looping");
assertEquals(e2.parentNode.ownerDocument.nodeType, 9, "e2 - document node
type has wrong node type");
return 2;
},
function () {
// test 27: a continuation of the previous test
var e1 = kungFuDeathGrip[0];
var e2 = kungFuDeathGrip[1];
kungFuDeathGrip = null;
assert(e1, "e1 - element itself didn't survive across tests");
assert(e1.parentNode, "e1 - parent element doesn't exist after waiting");
assert(e1.parentNode.ownerDocument, "e1 - document doesn't exist after
waiting");
assertEquals(e1.parentNode.ownerDocument.nodeType, 9, "e1 - document node
type has wrong node type after waiting");
assert(e2, "e2 - element itself didn't survive across tests");
assert(e2.parentNode, "e2 - parent element doesn't exist after waiting");
assert(e2.parentNode.ownerDocument, "e2 - document doesn't exist after
waiting");
assertEquals(e2.parentNode.ownerDocument.nodeType, 9, "e2 - document node
type has wrong node type after waiting");
return 2;
},
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