[Mono-bugs] [Bug 512774] New: Unhandled Exception in Normalization.Combine() (called String.Normalize()) with Greek Unicode characters

[bugzilla_noreply at novell.com]

http://bugzilla.novell.com/show_bug.cgi?id=512774


           Summary: Unhandled Exception in Normalization.Combine() (called
                    String.Normalize()) with Greek Unicode characters
    Classification: Mono
           Product: Mono: Class Libraries
           Version: unspecified
          Platform: Macintosh
        OS/Version: Mac OS X 10.5
            Status: NEW
          Severity: Normal
          Priority: P5 - None
         Component: CORLIB
        AssignedTo: mono-bugs at lists.ximian.com
        ReportedBy: tom.philpot at logos.com
         QAContact: mono-bugs at lists.ximian.com
          Found By: ---


User-Agent:       Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10.5; en-US;
rv:1.9.0.11) Gecko/2009060214 Firefox/3.0.11

The following program throws an UnhandledException when trying to normalize a
series of greek characters. See the program included in "Steps to Reproduce"

Reproducible: Always

Steps to Reproduce:
1. Compile and run the following program:

using System;
using System.Text;

namespace NormalizationTest
{
    class Program
    {
        static void Main(string[] args)
        {
            byte[] utf8Bytes = new byte[] {0xCE, 0xB1, 0xCC, 0x93, 0xCD, 0x85};
            string strToNormalize =
System.Text.Encoding.UTF8.GetString(utf8Bytes);
            Console.WriteLine("Converted from Hex: {0}", strToNormalize);

            Console.WriteLine("Composed Normalized String:
IsNormalized(NormalizationForm.FormC)  = {0}",
strToNormalize.IsNormalized(NormalizationForm.FormC));
            Console.WriteLine("{0}",
strToNormalize.Normalize(NormalizationForm.FormC));
        }
    }
}

Actual Results:  

WS1048:Debug tom.philpot$ /opt/mono/bin/gmcs NormTest.cs /out:NormTest.exe &&
/opt/mono/bin/mono --debug NormTest.exe
Converted from Hex: ᾀ
Composed Normalized String: IsNormalized(NormalizationForm.FormC)  = False

Unhandled Exception: System.SystemException: Internal error: should not happen.
  at Mono.Globalization.Unicode.Normalization.Combine
(System.Text.StringBuilder sb, Int32 start, Int32 checkType) [0x00198] in
/Users/tom.philpot/External/mono-project/mcs/class/corlib/Mono.Globalization.Unicode/Normalization.cs:206 
  at Mono.Globalization.Unicode.Normalization.Combine (System.String source,
Int32 start, Int32 checkType) [0x0003c] in
/Users/tom.philpot/External/mono-project/mcs/class/corlib/Mono.Globalization.Unicode/Normalization.cs:135 
  at Mono.Globalization.Unicode.Normalization.Compose (System.String source,
Int32 checkType) [0x00011] in
/Users/tom.philpot/External/mono-project/mcs/class/corlib/Mono.Globalization.Unicode/Normalization.cs:121 
  at Mono.Globalization.Unicode.Normalization.Normalize (System.String source,
Int32 type) [0x00015] in
/Users/tom.philpot/External/mono-project/mcs/class/corlib/Mono.Globalization.Unicode/Normalization.cs:392 
  at System.String.Normalize (NormalizationForm normalizationForm) [0x00023] in
/Users/tom.philpot/External/mono-project/mcs/class/corlib/System/String.cs:1442 
  at NormalizationTest.Program.Main (System.String[] args) [0x00000] 


Expected Results:  
Converted from Hex: ᾀ
Composed Normalized String: IsNormalized(NormalizationForm.FormC)  = False
ᾀ

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