DotNet Visual C: ICE in explicit override of interface property getter

• benvoigt / 206 / Tues, 26 Jan 2010 06:40:00 GMT / Comments (5)
• Getting a C1001 internal error off the following code:
  I've found an alternate means of making the Node property accessible in the parent class only using a public interface, private implementation class,
  and static_cast to downcast, but now I'm stuck wondering how to prevent any other class from being derived from that interface!
  Still thought I'd post this ICE to see if anyone else can validate it.
  ref class PrioritizedWorkScheduler
  {
  public:
  ref class ScheduledTask;
  private:
  interface class ITask
  {
  property System::Collections::Generic::LinkedListNode<ScheduledTask
  Node
  {
  System::Collections::Generic::LinkedListNode<ScheduledTask get();
  }
  };
  public:
  ref class ScheduledTask sealed : ITask
  {
  initonly System::Collections::Generic::LinkedListNode<ScheduledTask
  me;
  property System::Collections::Generic::LinkedListNode<ScheduledTask
  Node
  {
  virtual System::Collections::Generic::LinkedListNode<ScheduledTask
  get() sealed = ITask::Node::get
  {
  return me;
  }
  }
  public:
  ScheduledTask()
  {
  me = gcnew
  System::Collections::Generic::LinkedListNode<ScheduledTask^>(this);
  }
  };
  };
• Keywords:

  ice, explicit, override, interface, property, getter, dotnet, visual, .net

• http://dotnet.itags.org/visual-c/71193/«« Last Thread - Next Thread »»

• 1. Hi Ben,

     I have already repro this problem in our local machine and forward it to
     our product team for review. I will update when I get the result.

     Thanks for reporting this issue to us and I suggest you can also submit it
     in our feedback center, our development team may communicate with you
     directly on
     the issue there:

     http://connect.microsoft.com/feedba...aspx?SiteID=210
     Have a nice weekend!

     Best regards,

     Gary Chang
     Microsoft Online Community Support
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     garychangmsft | Thurs, 03 Jan 2008 18:03:00 GMT |

  2. ""Gary Chang[MSFT]"" <v-garych...online.microsoft.comwrote in message
     news:lz8LI2hCHHA.1984...TK2MSFTNGXA01.phx.gbl...

     Quote: Originally Posted by Hi Ben, > I have already repro this problem in our local machine and forward it to our product team for review. I will update when I get the result. > Thanks for reporting this issue to us and I suggest you can also submit it in our feedback center, our development team may communicate with you directly on the issue there: > http://connect.microsoft.com/feedba...aspx?SiteID=210

     
     Please validate:
     https://connect.microsoft.com/Visua...edbackID=239629
     

     Quote: Originally Posted by > Have a nice weekend! > Best regards, > Gary Chang Microsoft Online Community Support ================================================== Get notification to my posts through email? Please refer to http://msdn.microsoft.com/subscript...ault.aspx#notif ications. > Note: The MSDN Managed Newsgroup support offering is for non-urgent issues where an initial response from the community or a Microsoft Support Engineer within 1 business day is acceptable. Please note that each follow up response may take approximately 2 business days as the support professional working with you may need further investigation to reach the most efficient resolution. The offering is not appropriate for situations that require urgent, real-time or phone-based interactions or complex project analysis and dump analysis issues. Issues of this nature are best handled working with a dedicated Microsoft Support Engineer by contacting Microsoft Customer Support Services (CSS) at http://msdn.microsoft.com/subscript...rt/default.aspx. ================================================== This posting is provided "AS IS" with no warranties, and confers no rights. >

     benvoigt | Thurs, 03 Jan 2008 18:04:00 GMT |

  3. Hi Ben,

     I also got the confiormation from the corresponding product team-- this is
     a compiler bug, even in current builds. There isn't much workaround that
     we can find without changing the hierarchy of the interface and class.

     Do you need the interface ITask and ScheduledTask being nested in
     PrioritizedWorkScheduler?

     If you wants ITask to be only visible to ScheduledTask, we suggest you
     could make ITask a private in an assembly and ScheduledTask be a public
     explicit implementation in that same assembly.

     By the way, thanks for submit that bug report in our feedback center, our
     product team engineer would take care of it.

     Thanks!

     Best regards,

     Gary Chang
     Microsoft Online Community Support
     ==================================================
     Get notification to my posts through email? Please refer to
     http://msdn.microsoft.com/subscript...ault.aspx#notif
     ications.
     ==================================================
     This posting is provided "AS IS" with no warranties, and confers no rights.

     garychangmsft | Thurs, 03 Jan 2008 18:05:00 GMT |

  4. Thanks for the response, Ben.

     By the way, I suggest you monitor the issue you submit in the feedback
     center, our product team engineer also would follow up there.

     Good Luck!

     Best regards,

     Gary Chang
     Microsoft Online Community Support
     ==================================================
     Get notification to my posts through email? Please refer to
     http://msdn.microsoft.com/subscript...ault.aspx#notif
     ications.
     ==================================================
     This posting is provided "AS IS" with no warranties, and confers no rights.

     garychangmsft | Thurs, 03 Jan 2008 18:07:00 GMT |

  5. ""Gary Chang[MSFT]"" <v-garych...online.microsoft.comwrote in message
     news:i4x8EYRDHHA.1976...TK2MSFTNGXA01.phx.gbl...

     Quote: Originally Posted by Hi Ben, > I also got the confiormation from the corresponding product team-- this is a compiler bug, even in current builds. There isn't much workaround that we can find without changing the hierarchy of the interface and class. > Do you need the interface ITask and ScheduledTask being nested in PrioritizedWorkScheduler? > If you wants ITask to be only visible to ScheduledTask, we suggest you could make ITask a private in an assembly and ScheduledTask be a public explicit implementation in that same assembly.

     
     The idea was that ITask members would be only visible to
     PrioritizedWorkScheduler, and an opaque handle to the clients... so I did
     the C opaque handle thing (I've also taken the class native -- mixing
     managed and native code is just awesome, and I can use pragma unmanaged to
     guarantee certain functions can't be interrupted by garbage collection):

     class PrioritizedWorkScheduler

     {

     public:

     struct ScheduledTaskImpl;

     typedef ScheduledTaskImpl* ScheduledTask;

     typedef std::list<ScheduledTaskTaskList;

     typedef TaskList::iterator TaskNode;

     };

     Downside is that now there can be no publicly available members in
     ScheduledTaskImpl. But if I need that, I can make a public interface, and
     change ScheduledTask from a raw pointer typedef to a pointer wrapper class
     with operator->() cast to the interface.

     Quote: Originally Posted by > By the way, thanks for submit that bug report in our feedback center, our product team engineer would take care of it.

     
     I think C# forbids what I was trying to do, it would generate an error
     message "base class is less visible than derived class"... not sure if I've
     seen that error generated for an interface or only base classes though.
     

     Quote: Originally Posted by > Thanks! > Best regards, > Gary Chang Microsoft Online Community Support ================================================== Get notification to my posts through email? Please refer to http://msdn.microsoft.com/subscript...ault.aspx#notif ications. ================================================== This posting is provided "AS IS" with no warranties, and confers no rights. >

     benvoigt | Thurs, 03 Jan 2008 18:07:00 GMT |