C++/CLI compile error C3611 for "gcnew System::Windows::Forms::DataObject"

[panxn]

.NET version

.NET8 preview6

Did it work in .NET Framework?

Yes

Did it work in any of the earlier releases of .NET Core or .NET 5+?

It works in .NET6&7

Issue description

I'm not sure if it belongs to winform, maybe it's a bug of c++/cli compiler since these code compile well if rewrite with C#.

To reproduce the error, just create a new project in VS, add following attributes in vcxproj:

  <PropertyGroup>
    <TargetFramework>net8.0-windows</TargetFramework>
    <CLRSupport>NetCore</CLRSupport>
  </PropertyGroup>
  <ItemGroup>
    <FrameworkReference Include="Microsoft.WindowsDesktop.App.WindowsForms" />
  </ItemGroup>

Compile following code, then we can see compile error C3611: a sealed function cannot have a pure-specifier

void HelloWorld()
{
    gcnew System::Windows::Forms::DataObject();
}

BTW I suspect it's a c++/cli compiler bug because I have encountered it in dotnet/runtime#88840 (comment), this comment also provides another sample. Please help forward this problem to right person if you treat it as a compiler bug. Thanks!

Steps to reproduce

see description

[elachlan]

@Tanya-Solyanik is this the right repo for this?

[merriemcgaw]

This should go to the C++ team. @Olina-Zhang can you please file a bug in AzDO under the C++ area path and close this when you're done?

[Olina-Zhang]

Created an internal AzDo bug: https://devdiv.visualstudio.com/DevDiv/_workitems/edit/1867740, closing this one.