No warning if calling undefined method or property

[dmrvb]

Calling a non existent method or property in an object gives NO warning at edit time or at compile time, but gives "Unknown Name" error at runtime.

This is BAD, I need to catch errors like this before my customers!!

To Reproduce
Insert this code and note the D.yyy=10

Module Dave
Public Sub Main()
dim D as new DaveObj

    on error goto e
    D.yyy=10
    
exit sub

e:
call msgbox(Format$(Err.Number) & " " & err.Description )    
      
End Sub

End Module

class DaveObj

public xxx as long

end class

Expected behavior
I want to see this problem reported whilst editing, or at least while compiling

Desktop (please complete the following information):

• OS: Windows 10
• twinBASIC compiler version 0.9.2720

[WaynePhillipsEA]

We are aware of this one, but there was no issue opened for it, so thanks for reporting. Classes are currently seen (wrongly) as runtime extensible, that's why you don't see an error at compiler time.

[wqweto]

Classes are currently seen (wrongly) as runtime extensible

Btw, ADODB.Connection is deliberately missing nonextensible attribute so that one can call stored procedures with cn.MyStoredProc Param1, Param2, ... syntax in VB code.

It might be good candidate for testing nonextensible attribute implementation.

[WaynePhillipsEA]

Fixed in v0.10.509, thanks for reporting