This sounds like something we should check if it affects Thunderbird. Philipp -------- Forwarded Message -------- Subject: Window objects will no longer have a QueryInterface method in JS Date: Wed, 24 Jul 2019 15:44:33 -0400 From: Boris Zbarsky <bzbarsky@mit.edu> To: firefox-dev <firefox-dev@mozilla.org> At this point, the only Web IDL objects with (chrome-only) QueryInterface methods exposed to JS callers are Window and Element instances. In bug 1568585 [1] I plan to remove the QueryInterface JS method from Window. I've ensured that a try run with a MOZ_CRASH when QueryInterface is called on a Window from JS is green, so assuming we have test coverage of all the relevant callsites there shouldn't be any problems. But I figured I should give people a heads-up so they don't add new callsites. -Boris [1] https://bugzilla.mozilla.org/show_bug.cgi?id=1568585 _______________________________________________ firefox-dev mailing list firefox-dev@mozilla.org https://mail.mozilla.org/listinfo/firefox-dev

On 24 Jul 2019 22:26, Philipp Kewisch wrote: > This sounds like something we should check if it affects Thunderbird. Thanks, we're already actively working on the issue: https://bugzilla.mozilla.org/show_bug.cgi?id=1568420