Run Chromium with --remote-debugging-port=9222, start Safari using a recent WebKit. Try taking a heap snapshot. UI stops at the "Parsing..." phase.
Created attachment 99292 [details] patch
Manually committed http://trac.webkit.org/changeset/90222 2011-06-30 Mikhail Naganov <mnaganov@chromium.org> Reviewed by Yury Semikhatsky. Web Inspector: [Chromium] Fix heap snapshots in a remote debugging session from Safari. https://bugs.webkit.org/show_bug.cgi?id=63703 * inspector/front-end/HeapSnapshotWorker.js: (.Function.prototype.bind.return.bound): (.Function.prototype.bind):