[Mono-bugs] [Bug 417833] New: BitVector32. CreateSection allows the creation of illegal sections

[bugzilla_noreply at novell.com]

https://bugzilla.novell.com/show_bug.cgi?id=417833


           Summary: BitVector32.CreateSection allows the creation of illegal
                    sections
           Product: Mono: Class Libraries
           Version: SVN
          Platform: Other
        OS/Version: Other
            Status: NEW
          Severity: Normal
          Priority: P5 - None
         Component: System
        AssignedTo: mono-bugs at lists.ximian.com
        ReportedBy: lunchtimemama at gmail.com
         QAContact: mono-bugs at lists.ximian.com
          Found By: ---


Created an attachment (id=233729)
 --> (https://bugzilla.novell.com/attachment.cgi?id=233729)
This patch fixes the bug and optimizes the HighestSetBit method.

Test Case:

using System;
using System.Collections.Specialized;

class MainClass  {
    public static void Main (string[] args)  {
        var section1 = BitVector32.CreateSection (32767);
        var section2 = BitVector32.CreateSection (32767, section1);
        var section3 = BitVector32.CreateSection (128, section2);
        var vector = new BitVector32 (0);
        vector[section3] = 128;
        Console.WriteLine(vector[section3]);
    }
}

Result:
"0"

Expected Result:
An exception should be thrown.

Additional Info:
This is also a problem in .NET 3.5.


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