216591 - regexp match fails with this regexp, not in other browser (IE6, opera7 and NN4)

Status: VERIFIED DUPLICATE of bug 85721

(Core :: JavaScript Engine, defect)

Description

[Okin7]

User-Agent:       Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.5a) Gecko/20030728 Mozilla Firebird/0.6.1
Build Identifier: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.5a) Gecko/20030728 Mozilla Firebird/0.6.1

everything is in other fields.

Reproducible: Always

Steps to Reproduce:
test the code :
var code = 'a {result.data.DATA} b';
alert(code.match(/\{(([a-z0-9\-_]+?\.)+?)([a-z0-9\-_]+?)\}/gi));

Actual Results:  
alert box is empty

Expected Results:  
display {result.data.DATA}

this code works, but that's not exaclty the same regexp :

var code = 'a {result.data.DATA} b';
alert(code.match(/\{(([a-z0-9\-_]+\.)+?)([a-z0-9\-_]+?)\}/gi));

Comment 1

[Phil Schwartau]

Confirming bug with current JS source. Testcase added to JS testsuite:

      mozilla/js/tests/ecma_3/RegExp/regress-216591.js

Comment 2

[Phil Schwartau]

Marking as a duplicate of bug 85721, "Regexp performance degraded from 4.7".
It is a complete rewrite of the JS Regexp engine, and will fix many bugs
like this one. 

The above testcase passes in the JS shell with the patch for bug 85721
applied, and it passes in the Rhino shell, where the patch has already
been checked in. 

*** This bug has been marked as a duplicate of 85721 ***

Comment 3

[Phil Schwartau]

Verified duplicate.

Okin7: thank you for this report. You have been cc'ed on bug 85721
so you can follow progress on this issue -