[Webkit-unassigned] [Bug 55625] New: REGRESSION (r72493): Regexp exec doesn't work correctly on specific pattern

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=55625

           Summary: REGRESSION (r72493): Regexp exec doesn't work
                    correctly on specific pattern
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: All
               URL: http://tinymce.moxiecode.com/safari/regexp.html
        OS/Version: All
            Status: UNCONFIRMED
          Severity: Blocker
          Priority: P5
         Component: JavaScriptCore
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: spam at moxiecode.com


Description:
Regexp doesn't return correct value on latest nightly and nightly builds after r72493.

Steps to reproduce:

1. Open the attached URL: http://tinymce.moxiecode.com/safari/regexp.html
2. Click the test link.
3. Observe that it's failing.
4. Observe that it doesn't fail on nightly builds before r72493.

Expected result:
The regexp should return the correct value as other browsers do and builds before r72493.

Actual result:
It's returning null so there seems to be an issue with back references.

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