on #devtools jryans said that he saw a stack when he tried, but I don't see that stack in my console output

I tried "mach run --jsconsole" and got: onPacket threw an exception: Error: Server did not specify an actor, dropping packet: {"error":"unknownError","message":"error occurred while processing 'listTabs: TypeError: aWindow.gBrowser is undefined\nStack: BrowserTabList.prototype._getChildren@resource://gre/modules/commonjs/toolkit/loader.js -> resource://gre/modules/devtools/server/actors/webbrowser.js:288:3\nBrowserTabList.prototype._getBrowsers@resource://gre/modules/commonjs/toolkit/loader.js -> resource://gre/modules/devtools/server/actors/webbrowser.js:281:25\nBrowserTabList.prototype.getList@resource://gre/modules/commonjs/toolkit/loader.js -> resource://gre/modules/devtools/server/actors/webbrowser.js:314:3\nRootActor.prototype.onListTabs@resource://gre/modules/commonjs/toolkit/loader.js -> resource://gre/modules/devtools/server/actors/root.js:264:12\nDSC_onPacket@resource://gre/modules/commonjs/toolkit/loader.js -> resource://gre/modules/devtools/server/main.js:1407:15\nLocalDebuggerTransport.prototype.send/<@resource://gre/modules/commonjs/toolkit/loader.js -> resource://gre/modules/devtools/transport/transport.js:545:11\nmakeInfallible/<@resource://gre/modules/commonjs/toolkit/loader.js -> resource://gre/modules/devtools/DevToolsUtils.js:83:14\nmakeInfallible/<@resource://gre/modules/commonjs/toolkit/loader.js -> resource://gre/modules/devtools/DevToolsUtils.js:83:14\nLine: 288, column: 2"} Stack: DebuggerClient.prototype.onPacket/<@resource://gre/modules/devtools/dbg-client.jsm:873:1 resolve@resource://gre/modules/devtools/deprecated-sync-thenables.js:40:40 then@resource://gre/modules/devtools/deprecated-sync-thenables.js:20:43 then@resource://gre/modules/devtools/deprecated-sync-thenables.js:58:9 DebuggerClient.prototype.onPacket@resource://gre/modules/devtools/dbg-client.jsm:869:1 LocalDebuggerTransport.prototype.send/<@resource://gre/modules/commonjs/toolkit/loader.js -> resource://gre/modules/devtools/transport/transport.js:545:11 makeInfallible/<@resource://gre/modules/commonjs/toolkit/loader.js -> resource://gre/modules/devtools/DevToolsUtils.js:83:14 makeInfallible/<@resource://gre/modules/commonjs/toolkit/loader.js -> resource://gre/modules/devtools/DevToolsUtils.js:83:14 Line: 873, column: 0

STR firefox.exe -jsconsole Regression window(fx-team) Good: https://hg.mozilla.org/integration/fx-team/rev/54b2b11d1895 Mozilla/5.0 (Windows NT 6.1; WOW64; rv:36.0) Gecko/20100101 Firefox/36.0 ID:20141013225458 Bad: https://hg.mozilla.org/integration/fx-team/rev/2be42fbc9d98 Mozilla/5.0 (Windows NT 6.1; WOW64; rv:36.0) Gecko/20100101 Firefox/36.0 ID:20141014011156 Pushlog: https://hg.mozilla.org/integration/fx-team/pushloghtml?fromchange=54b2b11d1895&tochange=2be42fbc9d98 Suspect: Bug 975084

That's not too surprising to be honest... I'll take a look next week.

Try: https://treeherder.mozilla.org/ui/#/jobs?repo=try&revision=a85911d09b1a

Comment on attachment 8508218 [details] [diff] [review] gBrowser might not be available on all windows Review of attachment 8508218 [details] [diff] [review]: ----------------------------------------------------------------- No tests being broken ?! :/

(In reply to Alexandre Poirot [:ochameau] from comment #5) > Comment on attachment 8508218 [details] [diff] [review] > gBrowser might not be available on all windows > > Review of attachment 8508218 [details] [diff] [review]: > ----------------------------------------------------------------- > > No tests being broken ?! :/ Yeah... :/ I believe it's because in this case we list tabs very early during startup, but I don't know for certain. Anyway, real usage of the tab list does work other than this case.