Mono 1.2.6 Runtime has a bug in System.Text.Encoding Assembly

[akiladila]

Binary package hint: mono-runtime

Release: Ubuntu 8.04 Hardy Heron
Package: mono-runtime installed version: 1.2.6+dfsg-6ununtu3

My Code:

using System;
using System.Text;
using System.Globalization;
using System.IO;

public class SamplesEncoding {

  public static void Main() {
    Encoding _encoding = null;
    Console.WriteLine("The OEM Code Page Identifier is {0}",
              CultureInfo.CurrentCulture.TextInfo.OEMCodePage);
    try{
    _encoding = Encoding.GetEncoding(CultureInfo.CurrentCulture.TextInfo.OEMCodePage);
    }catch(NotSupportedException e){
      Console.WriteLine("You are toast got exception");
      Console.WriteLine(e.ToString());
      Environment.Exit(1);
    }
    Console.WriteLine("Exiting Normally, Goodbye");
  }
}

Code Built via command:
gmcs /out:encoding_test.exe /t:exe encoding.cs

Command used to execute code:
mono encoding_test.exe

Results:
aha@stanwyk:~/scratch/zip_test$ mono encode_test.exe
The OEM Code Page Identifier is 437
You are toast got exception
System.NotSupportedException: CodePage 437 not supported
  at System.Text.Encoding.GetEncoding (Int32 codePage) [0x00000]
  at SamplesEncoding.Main () [0x00000]

Expected results:
aha@stanwyk:~/scratch/zip_test$ ~/tools/mono-1.2.6/bin/mono encode_test.exe
The OEM Code Page Identifier is 437
Exiting Normally, Goodbye

Methodology used to identify bug:
1. I compiled Mono 1.2.6 from the source at Novell using:
    ./configure --prefix=/home/aha/tools/mono-1.2.6
    make
    make install
2. I then compiled the source listed above using the mono distributed with Hardy Heron
3. I attempted to run the Assembly encoding_test.exe using the mono runtime distributed with Hardy Heron
    and received an exception
4. I ran the same code using the mono runtime that I compiled from scratch and the code ran as expected.

[Jo Shields (directhex)]

This is fixed in 1.9.1, which is part of Ubuntu Intrepid (8.10):

directhex@mortos:/tmp$ gmcs encodeytest.cs
encodeytest.cs(9,14): warning CS0219: The variable `_encoding' is assigned but its value is never used
Compilation succeeded - 1 warning(s)
directhex@mortos:/tmp$ mono encodeytest.exe
The OEM Code Page Identifier is 850
Exiting Normally, Goodbye