Compiler Error CS1521

Invalid base type

A base class specification was ill formed.

The following sample generates CS1521:

// CS1521.cs
class CMyClass
{
   public static void Main()
   {
   }
}

class CMyClass1 : CMyClass     // OK
{
}

class CMyClass2 : CMyClass[]   // CS1521
{
}

class CMyClass3 : CMyClass*    // CS1521
{
}