target  : (2,0x71) CUnkVar
status  : emitted
from    : discovery snippet 'r2_varbranch_21' (minimised)

' ---- modProbe.bas
Option Explicit

Public Sub Main()
  Dim v As Variant, w As Variant, n As Long, o As Object
  If v Is Nothing Then n = 1
End Sub

Function F() As Variant
End Function

target disasm lines:
  modProbe.Sub Main | 401497    FC71                  CUnkVar
