'System.ArithmeticException was unhandled' at System.Double.CompareTo(Double value) when comparing with Double.NaN : DOTNET

We are observing a strange problem in a C#.NET project (host) that
makes use of COM Interop (C++). These intop components themself load
the borland runtime.

If a call to System.Double.CompareTo with argument Double.NaN is
processed, a 'System.ArithmeticException' (C0000090 :
EXCEPTION_FLT_INVALID_OPERATION) is raised. This goes to a second
chance exception leading to final termination of the process!

This post--> http://forums.microsoft.com/MSDN/Sho...01442&SiteID=1
describes a very similar behaviour in a different environment and also
describes a workaround. This workaround also applied to our problem,
so I think it is worth posting here for two reasons:

1.) I think, this is a CLR bug that should be fixed.
2.) Others might experience the same problem and should find a
workaround.

Cheers,
Volker
http://www.voneinem-windbg.blogspot.com


FIRST REPRODUCTION: Make a simple C# forms app and run it

REMOVE comment for WORKAROUND

using System.Runtime.InteropServices;

namespace CLRvsBorland
{
static class Program
{

[DllImport("kernel32.dll", CharSet = CharSet.Auto)]
static extern IntPtr LoadLibrary(string lpFileName);

[STAThread]
static void Main()
{
IntPtr res = LoadLibrary(@"c:\SnapShots
\voneinem_view_a0032858_c\VespucciPool\common\bin\ release
\CC3250MT.DLL");

// Workaround: remove comments
//try
//{
// // Throw an exception..
// throw new Exception();
//}
//catch
//{
// // .. and just catch it
//}


Double a1 = Double.NaN;
MessageBox.Show("Ups" +
a1.CompareTo(Double.NaN).ToString());
}
}
}