[Mono-bugs] [Bug 350547] New: RegEx malfunction in mono

[bugzilla_noreply at novell.com]

https://bugzilla.novell.com/show_bug.cgi?id=350547


           Summary: RegEx malfunction in mono
           Product: Mono: Class Libraries
           Version: 1.2.6
          Platform: x86-64
        OS/Version: Linux
            Status: NEW
          Severity: Normal
          Priority: P5 - None
         Component: Sys.Core
        AssignedTo: mono-bugs at ximian.com
        ReportedBy: yhdezalvarez at gmail.com
         QAContact: mono-bugs at ximian.com
                CC: yhdezalvarez at gmail.com
          Found By: Other


Description of Problem:

Testcase (regexTest.cs):

using System;
using System.Text.RegularExpressions;

namespace regexTest
{
    class Program
    {
        static void Main(string[] args)
        {
            Regex R0 = new
Regex(@"\./(?<d>([^/]+/){0}(?<u>([^/]+/){0}[^/]+))/(?<f>.+)");
            Regex R1 = new
Regex(@"\./(?<d>([^/]+/){0}(?<u>([^/]+/){1}[^/]+))/(?<f>.+)");
            Regex R2 = new
Regex(@"\./(?<d>([^/]+/){1}(?<u>([^/]+/){0}[^/]+))/(?<f>.+)");
            Regex R3 = new
Regex(@"\./(?<d>([^/]+/){1}(?<u>([^/]+/){1}[^/]+))/(?<f>.+)");
            Regex R4 = new
Regex(@"\./(?<d>([^/]+/){2}(?<u>([^/]+/){2}[^/]+))/(?<f>.+)");
            string str = "./dir1/dir2/dir3/dir4/dir5/dir6";
            Console.WriteLine("{0}", R0.Match(str).Groups["u"].Value);
            Console.WriteLine("{0}", R1.Match(str).Groups["u"].Value);
            Console.WriteLine("{0}", R2.Match(str).Groups["u"].Value);
            Console.WriteLine("{0}", R3.Match(str).Groups["u"].Value);
            Console.WriteLine("{0}", R4.Match(str).Groups["u"].Value);
        }
    }
}


Steps to reproduce the problem:
mcs regexTest.cs; mono regexTest.exe

Actual Results:
dir5
dir4/dir5
dir2/dir3/dir4/dir5
dir2/dir3
dir3/dir4/dir5

Expected Results:
dir1
dir1/dir2
dir2
dir2/dir3
dir3/dir4/dir5


How often does this happen? 
Always

Additional Information:
OS: Gentoo x86_64
Package: dev-lang/mono-1.2.6

net 2.0 (windows), VS2005 compiled binary: results OK
net 2.0 (windows), mcs compiled binary: results OK
mono (linux), VS2005 compiled binary: bogus results;
mono (linux), mcs compiled binary: bogus results;


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