{"action":"created","issue":{"url":"https://api.github.com/repos/servo/servo/issues/5228","labels_url":"https://api.github.com/repos/servo/servo/issues/5228/labels{/name}","comments_url":"https://api.github.com/repos/servo/servo/issues/5228/comments","events_url":"https://api.github.com/repos/servo/servo/issues/5228/events","html_url":"https://github.com/servo/servo/pull/5228","id":62136660,"number":5228,"title":"Fix memory leak in flow tree by adding weak refs.","user":{"login":"metajack","id":28357,"avatar_url":"https://avatars.githubusercontent.com/u/28357?v=3","gravatar_id":"","url":"https://api.github.com/users/metajack","html_url":"https://github.com/metajack","followers_url":"https://api.github.com/users/metajack/followers","following_url":"https://api.github.com/users/metajack/following{/other_user}","gists_url":"https://api.github.com/users/metajack/gists{/gist_id}","starred_url":"https://api.github.com/users/metajack/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/metajack/subscriptions","organizations_url":"https://api.github.com/users/metajack/orgs","repos_url":"https://api.github.com/users/metajack/repos","events_url":"https://api.github.com/users/metajack/events{/privacy}","received_events_url":"https://api.github.com/users/metajack/received_events","type":"User","site_admin":false},"labels":[{"url":"https://api.github.com/repos/servo/servo/labels/S-awaiting%20merge","name":"S-awaiting merge","color":"d4c5f9"}],"state":"closed","locked":false,"assignee":null,"milestone":null,"comments":10,"created_at":"2015-03-16T16:38:10Z","updated_at":"2015-03-17T02:03:39Z","closed_at":"2015-03-16T19:51:58Z","pull_request":{"url":"https://api.github.com/repos/servo/servo/pulls/5228","html_url":"https://github.com/servo/servo/pull/5228","diff_url":"https://github.com/servo/servo/pull/5228.diff","patch_url":"https://github.com/servo/servo/pull/5228.patch"},"body":"Cycles were being created in the flow tree since absolutely positioned\r\ndescendants had pointers to their containing blocks. This adds\r\nWeakFlowRef (based on Weak<T>) and makes these backpointers weak\r\nreferences. This also harmonizes our custom Arc<T>, FlowRef, to be\r\nconsistent with the upstream implementation.\r\n\r\nFixes #4915."},"comment":{"url":"https://api.github.com/repos/servo/servo/issues/comments/82034023","html_url":"https://github.com/servo/servo/pull/5228#issuecomment-82034023","issue_url":"https://api.github.com/repos/servo/servo/issues/5228","id":82034023,"user":{"login":"jdm","id":27658,"avatar_url":"https://avatars.githubusercontent.com/u/27658?v=3","gravatar_id":"","url":"https://api.github.com/users/jdm","html_url":"https://github.com/jdm","followers_url":"https://api.github.com/users/jdm/followers","following_url":"https://api.github.com/users/jdm/following{/other_user}","gists_url":"https://api.github.com/users/jdm/gists{/gist_id}","starred_url":"https://api.github.com/users/jdm/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/jdm/subscriptions","organizations_url":"https://api.github.com/users/jdm/orgs","repos_url":"https://api.github.com/users/jdm/repos","events_url":"https://api.github.com/users/jdm/events{/privacy}","received_events_url":"https://api.github.com/users/jdm/received_events","type":"User","site_admin":false},"created_at":"2015-03-17T02:03:39Z","updated_at":"2015-03-17T02:03:39Z","body":"I guess that would be equivalent to the window/dom/orphan-nodes tree in about:memory in Firefox - it measures DOM trees that are reachable through some mysterious mechanism, but aren't part of an actual DOM tree for a page."}}