[Webkit-unassigned] [Bug 75984] QWebView leaks memory when QObject signal is connected to javascript slot

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=75984


Robert Knight <robertknight at gmail.com> changed:

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                 CC|                            |robertknight at gmail.com




--- Comment #8 from Robert Knight <robertknight at gmail.com>  2013-04-23 09:45:10 PST ---
Confirmed with Qt 4.8 on Mac.

I can suggest a couple of possible workarounds:

 1. The connections from Qt objects to JS functions are proxied via a hidden QObject which inherits from 'JSC::Bindings::QtConnectionObject'.  Finding these objects via QObject::children() and deleting them will remove the connection.

 2. Instead of calling object.signal.connect() directly, use a wrapper which performs the connection and saves the (method, receiver) somewhere and add a document unload handler which removes these connections.

Something like: https://gist.github.com/robertknight/5445289

I haven't tested this extensively.

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