from bug 1388628 comment 10: > Okay, I can reproduce with a file:// homepage in nightly. > > This seems relevant: > > A coding exception was thrown in a Promise resolution callback. > See > https://developer.mozilla.org/Mozilla/JavaScript_code_modules/Promise.jsm/ > Promise > > Full message: TypeError: access to strict mode caller function is censored > Full stack: NS_ASSERT@resource://gre/modules/debug.js:50:7 > restoreTab@resource:///modules/sessionstore/SessionStore.jsm:3552:5 > restoreTabs@resource:///modules/sessionstore/SessionStore.jsm:3539:7 > ssi_restoreWindow@resource:///modules/sessionstore/SessionStore.jsm:3404:7 > ssi_restoreWindows@resource:///modules/sessionstore/SessionStore.jsm:3484:5 > initializeWindow@resource:///modules/sessionstore/SessionStore.jsm:1158:11 > onBeforeBrowserWindowShown/<@resource:///modules/sessionstore/SessionStore. > jsm:1307:9 > process@resource://gre/modules/Promise-backend.js:922:23 > walkerLoop@resource://gre/modules/Promise-backend.js:806:7 > scheduleWalkerLoop/<@resource://gre/modules/Promise-backend.js:742:11 restoreTab should not break the whole session restore process when this happens. It should instead log an error and return, or something like that.

Comment on attachment 8905460 [details] Bug 1394767 - Log an error and return in unexpected situations rather than calling NS_ASSERT and letting the subsequent code fail. https://reviewboard.mozilla.org/r/177274/#review182286 Thanks! Can you update the strings passed into `Cu.reportError()` to be proper sentences, starting with capitals and ending with a dot?

(In reply to Dão Gottwald [::dao] from comment #1) > Returning in onBrowserCrashed if the browser isn't remote breaks various > tests, so I simply removed this seemingly bogus check. Try run with the check and return: https://treeherder.mozilla.org/#/jobs?repo=try&revision=2baea9efe2294df9660e32d5a5addcb982eb033c Without that check: https://treeherder.mozilla.org/#/jobs?repo=try&revision=9d9f1cfea23b0f9aac024fff68dfa8ee6b3f4dd9

Pushed by dgottwald@mozilla.com: https://hg.mozilla.org/integration/autoland/rev/b4b9eaba235e Log an error and return in unexpected situations rather than calling NS_ASSERT and letting the subsequent code fail. r=mikedeboer