456371 - Garbage collector removes referenced (still used) items.

Status: RESOLVED DUPLICATE of bug 335998

(Core :: DOM: Core & HTML, defect)

Description

[Sjoerd Mulder]

User-Agent:       Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9.0.1) Gecko/2008070208 Firefox/3.0.1
Build Identifier: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9.0.1) Gecko/2008070208 Firefox/3.0.1

When using XML documents, and certain elements are referenced. It seems
that Mozilla Firefox is cleaning up the XML document too greedy, e.g.
parentNode properties of references become null and seem to be magically
disappeared.

See attached testcase, it will at random moments break-down. Because
element.parentNode is null, where the element is still referenced and used!

This breaks functionality like lookupPrefix and lookupNamespaceURI functions.

Also memory is increasing a lot, where Safari and Opera stay quite stable.

Reproducible: Always

Comment 1

[Sjoerd Mulder]

Attachment: Testcase

Comment 2

[Sjoerd Mulder]

Tested latest nightly, it also has this problem:

Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9.1b1pre) Gecko/20080922032349 Minefield/3.1b1pre

Comment 3

[Brendan Eich [:brendan]]

Please search for dups (by searching for parentNode, e.g.). Also this is not a JS engine bug.

/be