Steps to reproduce problem: 1) disable JavaScript in browser 2) open: http://www.irregularwebcomic.net/rss3.xml Actual result: feed doesn't get parsed. Expected result: feed should be displayed. Additional information: This bug was created as a clone of bug 786009.

Confirmed. 2.13.1 works properly. Mozilla/5.0 (Windows NT 6.1; WOW64; rv:16.0) Gecko/20121011 Firefox/16.0 SeaMonkey/2.13.1 Build identifier: 20121011080919 By the time we reach here we're broken: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:17.0) Gecko/17.0 Firefox/17.0 SeaMonkey/2.14a1 Build identifier: 20120726003003 In that case, no page actually loads. It shows "done", but the page is entirely gray, & Page Info shows it to be about:blank. Error Console shows: Error: Services.scriptSecurityManager.getCodebasePrincipal is not a function Source File: resource:///components/nsAbout.js Line: 43 I did see this, once: Error: Search service falling back to synchronous initialization at SRCH_SVC__ensureInitialized@resource:///components/nsSearchService.js:2498 @resource:///components/nsSearchService.js:3468 @chrome://communicator/content/nsContextMenu.js:1284 @chrome://communicator/content/nsContextMenu.js:45 nsContextMenu@chrome://communicator/content/nsContextMenu.js:26 onpopupshowing@chrome://navigator/content/navigator.xul:1 Source File: resource:///components/nsSearchService.js Line: 2499 A later build is different again, actually loading the page, though not displaying its data, & no Error Console message: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:17.0) Gecko/17.0 Firefox/17.0 SeaMonkey/2.14a1 Build identifier: 20120814003006 (these are builds I had on hand, so can't necessarily give a precise regression range)

(In reply to therube from comment #1) > Mozilla/5.0 (Windows NT 6.1; WOW64; rv:17.0) Gecko/17.0 Firefox/17.0 > SeaMonkey/2.14a1 > Build identifier: 20120726003003 > > In that case, no page actually loads. It shows "done", but the page is > entirely gray, & Page Info shows it to be about:blank. > > Error Console shows: > > Error: Services.scriptSecurityManager.getCodebasePrincipal is not a function > Source File: resource:///components/nsAbout.js > Line: 43 This was fixed later on in the 2.14 cycle, so 2.14b doesn't throw this error.

Well, there appear to be a number of options: 1. Restore nsAboutFeeds.js and add the custom principal there 2. Always add the custom principal in nsAbout.js (I tried this and I couldn't get anything to break) 3. Add a special case for about:feeds in nsAbout.js 4. Add a special case for about:feeds in nsAbout.js BUT hide it under its own flag

5. Add the custom principal in FeedConverter.js

Pushed comm-central changeset 0e457d4ab692.

Comment on attachment 674441 [details] [diff] [review] Proposed patch [Approval Request Comment] Regression caused by (bug #): 774585 User impact if declined: Unable to view feeds when JavaScript is disabled Testing completed (on m-c, etc.): Risk to taking this patch (and alternatives if risky): Low String changes made by this patch: None

http://hg.mozilla.org/releases/comm-aurora/rev/1c1dd649ea89 http://hg.mozilla.org/releases/comm-beta/rev/2ccb24c2d876