898189 - Regex fails on a string of length 500006 but not 500005

Status: RESOLVED WORKSFORME

(Core :: JavaScript Engine, defect)

Description

[brian.j.suh]

Attachment: yo.html

User Agent: Mozilla/5.0 (Windows NT 6.2; WOW64; rv:22.0) Gecko/20100101 Firefox/22.0 (Beta/Release)
Build ID: 20130618035212

Steps to reproduce:

Open the attached HTML file in Firefox.


Actual results:

Two alert dialogs. First one shows regex match results. Second one shows null.


Expected results:

Both alert dialogs should show regex match results. (Works on Chrome)

Comment 1

[Alice0775 White]

1st Regression 
  Both fails
  pushlog: http://hg.mozilla.org/mozilla-central/pushloghtml?fromchange=0ee09dea0911&tochange=fc6783c960ca
  Suspected: Bug 564953

2nd Regression 
  First one shows regex match results.
  Second one shows null
  Pushlog: http://hg.mozilla.org/mozilla-central/pushloghtml?fromchange=b69d30cc0b24&tochange=3589f8cefd83
  Suspected: Bug 625600

Comment 2

[Benjamin Bouvier [:bbouvier] (inactive)]

It was a specific issue with yarr; now we have irregexp. Tested with latest nightly and couldn't reproduce. Closing as worksforme, any relevant new information should probably be put in its own new bug.