[Webkit-unassigned] [Bug 206605] New: Prevent infinite recursion when upgrading custom elements

bugzilla-daemon at webkit.org bugzilla-daemon at webkit.org
Wed Jan 22 11:43:11 PST 2020


            Bug ID: 206605
           Summary: Prevent infinite recursion when upgrading custom
           Product: WebKit
           Version: Safari Technology Preview
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: DOM
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: d at domenic.me

We recently discovered a bug where certain strange patterns of author code could cause infinite recursion in the spec algorithms and in all browsers. Blink has fixed this and Gecko has a bug on file, so here's one for WebKit.

Spec fix: https://github.com/whatwg/html/pull/5126

Tests: https://github.com/web-platform-tests/wpt/pull/20465

Live tests: https://wpt.fyi/results/custom-elements/upgrading.html?label=master&label=experimental&aligned

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