[Webkit-unassigned] [Bug 118788] [GTK] WebKitDOM objects leaking

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=118788

--- Comment #5 from Milan Crha <mcrha at redhat.com> ---
Created attachment 246517
  --> https://bugs.webkit.org/attachment.cgi?id=246517&action=review
wk-leaks.c

Test application (first line shows how to compile & run it), which makes it easier to reproduce the leaks. Similar code (update_styles()) is used in Evolution and called to quite few times on various occasions.

The thing is that objects like WebKitDOMCSSRuleList (returned from webkit_dom_css_style_sheet_get_css_rules()) and WebKitDOMCSSRule (returned from webkit_dom_css_rule_list_item()) are not freed on frame reload, but a new objects are returned anyway.

The reason is that DOMObjectCache::clearByFrame() is called with a valid frame, but these objkects (and many other DOM objects) are stored in the cache with NULL data->frame.

My opinion: It won't work to always remove objects which has data->frame == NULL in the cache on any frame cleanup, because that would influence (invalidate) GObject-s from other web views (if there are more instances).

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