User Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:21.0) Gecko/20100101 Firefox/21.0 (Beta/Release) Build ID: 20130511120803 Steps to reproduce: In my AddOn, I use the Components.classes["@mozilla.org/dom/storagemanager;1"] as described here: https://developer.mozilla.org/en-US/docs/XPCOM_Interface_Reference/NsIDOMStorageManager Actual results: The line var dsm = Components.classes["@mozilla.org/dom/storagemanager;1"] .getService(Components.interfaces.nsIDOMStorageManager); in my AddOn code throws a TypeError, since Components.classes["@mozilla.org/dom/storagemanager;1"] is undefined for some reasons. Expected results: Components.classes["@mozilla.org/dom/storagemanager;1"] shouldn't be undefined, or the change should be documented somewhere, so AddOn developers know, that they should use either "@mozilla.org/dom/localStorage-manager;1" or "@mozilla.org/dom/sessionStorage-manager;1" instead of "@mozilla.org/dom/storagemanager;1" from now on.

Regression winodw(m-c) Good: http://hg.mozilla.org/mozilla-central/rev/41bb93c802d1 Mozilla/5.0 (Windows NT 6.1; WOW64; rv:23.0) Gecko/20130415 Firefox/23.0 ID:20130415170023 Bad: http://hg.mozilla.org/mozilla-central/rev/1d9c510b3742 Mozilla/5.0 (Windows NT 6.1; WOW64; rv:23.0) Gecko/20130415 Firefox/23.0 ID:20130415185024 Pushlog: http://hg.mozilla.org/mozilla-central/pushloghtml?fromchange=41bb93c802d1&tochange=1d9c510b3742 Regression winodw(m-i) Good: http://hg.mozilla.org/integration/mozilla-inbound/rev/644f16c3f87c Mozilla/5.0 (Windows NT 6.1; WOW64; rv:23.0) Gecko/20130415 Firefox/23.0 ID:20130415053103 Bad: http://hg.mozilla.org/integration/mozilla-inbound/rev/626f981f90e6 Mozilla/5.0 (Windows NT 6.1; WOW64; rv:23.0) Gecko/20130415 Firefox/23.0 ID:20130415054102 Pushlog: http://hg.mozilla.org/integration/mozilla-inbound/pushloghtml?fromchange=644f16c3f87c&tochange=626f981f90e6 Regressed by: Bug 600307

dev-doc-needed => Here is how I updated my extension: https://github.com/hultmann/multifox/commit/12b65e9009eab60932edcaff9e333b18233f431d

(In reply to Jeferson Hultmann from comment #2) > dev-doc-needed => Here is how I updated my extension: > https://github.com/hultmann/multifox/commit/ > 12b65e9009eab60932edcaff9e333b18233f431d It is correct. Seems like I forgot to put the dev-doc-needed keyword to the original rewrite bug (600307). The method of the old manager however remains in the interface. If this appears more often, we can re-add "@mozilla.org/dom/storagemanager;1" to the ContracID list. It could also be easily uplifted.

This is confirmed, my add-on is affected. Breaking APIs like this is unacceptable behavior, people.

(In reply to Honza Bambas (:mayhemer) from comment #3) > (In reply to Jeferson Hultmann from comment #2) > > dev-doc-needed => Here is how I updated my extension: > > https://github.com/hultmann/multifox/commit/ > > 12b65e9009eab60932edcaff9e333b18233f431d > > It is correct. Seems like I forgot to put the dev-doc-needed keyword to the > original rewrite bug (600307). The method of the old manager however > remains in the interface. > > If this appears more often, we can re-add > "@mozilla.org/dom/storagemanager;1" to the ContracID list. It could also be > easily uplifted. Since we're going to Beta with FF23 on Monday, let's do the uplift and make sure we don't break addon compat in 23. Leave it out of 24 again if you like, and once the docs are updated.

Here should be soon a build to try extension with: https://ftp.mozilla.org/pub/mozilla.org/firefox/try-builds/honzab.moz@firemni.cz-2f7a7dbd9351/

https://hg.mozilla.org/integration/mozilla-inbound/rev/e92898159905 https://hg.mozilla.org/releases/mozilla-aurora/rev/1a53b79ea529 https://hg.mozilla.org/releases/mozilla-beta/rev/aaf3917516d2

Thank you guys!

@Jan Wedding, this should now be fixed in Firefox 23, 24, and 25. Can you please confirm?

I can confirm. Tested with Firefox 23, 24, and 25 (currenty versions for each). Thanks a lot. :)

Thank you for your help Jan.