[Webkit-unassigned] [Bug 67154] New: UIWebView: Inconsistent Regular Expression Processing

Mon Aug 29 14:31:01 PDT 2011

https://bugs.webkit.org/show_bug.cgi?id=67154

           Summary: UIWebView: Inconsistent Regular Expression Processing
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: Other
        OS/Version: Other
            Status: UNCONFIRMED
          Severity: Normal
          Priority: P2
         Component: JavaScriptCore
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: webkit at mdakin.mailcan.com

Created an attachment (id=105522)
 --> (https://bugs.webkit.org/attachment.cgi?id=105522&action=review)
Contains test HTML and Screenshots of output.

Elias Zamaria has discovered a bug in the regular-expression processing of the webkit that runs inside the UIWebView on an iPhone 4 running iOS 4.3.3 (8J2).  The user-agent string of such a UIWebView is:

Mozilla/5.0 (iPhone; U; CPU iPhone OS 4_3_3 like Mac OS X; en-us) AppleWebKit/533.17.9 (KHTML, like Gecko) Mobile/8J2

The bug presents in the following manner:

iOS 4.3.3 UIWebView: PRESENTS: iOS-4_3_3-UIWebView.png
iOS 4.3.3 Safari: DOES NOT PRESENT: iOS-4_3_3-Safari.png
MacOS Safari 5.1 (6534.50): DOES NOT PRESENT: MacOS-Safari-5_1.jpg

We believe the iOS 4.3.3 UIWebView case to be INCORRECT output.  Whereas the other cases are correct.

Steps to reproduce:

Load http://eliasz.net/regexTest.html using a UIWebView.

Alternatively, regexTest.html can be found in the zipfile attached to this bug.

To be explicit, the test code is this:

<!DOCTYPE html>
<html><head>
<title>regex test</title>
</head>
<body>
<div id="test"></div>
<script>document.getElementById("test").innerText = "stuff/oldSubstr".replace(/[^\/]*?$/, "replacement");</script>
</body></html>

It is expected that "oldSubstr" be replaced with "replacement."  This does not happen in the UIWebView case (the replacement string is instead appended to the end).

All of the above-mentioned files have all been incorporated into the attached regexTest.zip.

Could this bug be related to:

https://bugs.webkit.org/show_bug.cgi?id=23121

?

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