User Agent: Mozilla/5.0 (X11; Linux x86_64; rv:9.0) Gecko/20100101 Firefox/9.0 Build ID: 20111206234556 Steps to reproduce: (1) Download ext js 4.0 (2) open (not even in the server) with file:// the doc/index.html Actual results: Firefox 11 keeps spinning Expected results: Display page: Welcome to Ext JS 4! this works well in firefox 9 AND Chrome AND Opera 11.60

1) download it from http://www.sencha.com/products/extjs/download/ - scroll down to the Open Source link (ext js 4.0.7) 2) Open the /docs/index.html file 3) you get this error >Error: too much recursion >Source File: file:///C:/Users/Matti/Desktop/ext-4.0.7-gpl/docs/app.js >Line: 1

Last good nightly: 2011-12-03 First bad nightly: 2011-12-04 Pushlog: http://hg.mozilla.org/mozilla-central/pushloghtml?fromchange=9740118b9dcc&tochan ge=c2102c45c8da

if I set javascript.options.methodjit.content to false,it works without error,

the top description says: the browser is: User Agent: Mozilla/5.0 (X11; Linux x86_64; rv:9.0) Gecko/20100101 Firefox/9.0 Build ID: 20111206234556 but in fact it was written with 9 but the incident reported occured in 11 Nigthly.

#1 regression window(jm): Works: http://hg.mozilla.org/projects/jaegermonkey/rev/07c668448519 Mozilla/5.0 (Windows NT 6.1; WOW64; rv:10.0a1) Gecko/20111011 Firefox/10.0a1 ID:20111011040335 Error: f.model is undefined Source File: file:///D:/bug710443/docs/app.js Line: 1 http://hg.mozilla.org/projects/jaegermonkey/rev/ab14001bab84 Mozilla/5.0 (Windows NT 6.1; WOW64; rv:10.0a1) Gecko/20111012 Firefox/10.0a1 ID:20111012083346 #1 Pushlog: http://hg.mozilla.org/projects/jaegermonkey/pushloghtml?fromchange=07c668448519&tochange=ab14001bab84 Triggered by: b9137bf550bd + ab14001bab84 bug 693754 #2 regression window(jm): Error: f.model is undefined Source File: file:///D:/bug710443/docs/app.js Line: 1 http://hg.mozilla.org/projects/jaegermonkey/rev/36694940133d Mozilla/5.0 (Windows NT 6.1; WOW64; rv:10.0a1) Gecko/20111026 Firefox/10.0a1 ID:20111026040334 Error: too much recursion Source File: file:///D:/bug710443/docs/app.js Line: 1 http://hg.mozilla.org/projects/jaegermonkey/rev/b01eb1ba58ce Mozilla/5.0 (Windows NT 6.1; WOW64; rv:10.0a1) Gecko/20111027 Firefox/10.0a1 ID:20111027151409 #2 Pushlog: http://hg.mozilla.org/projects/jaegermonkey/pushloghtml?fromchange=36694940133d&tochange=b01eb1ba58ce Triggered by: 57b753e28ffd Brian Hackett — Remove JSFunction fixed slots and unused fields, bug 697537.

WFM in 12/19 Nightly. Pretty sure this is bug 710780.