target  : (3,0xF0) FMemStVarCopy
status  : emitted
from    : discovery snippet 'st_udtparam_Var' (minimised)

' ---- modProbe.bas
Option Explicit
Private Type TRec
  pad As Long
  f As Variant
End Type

Public Sub Main()
  Dim r As TRec
End Sub

Private Sub P(x As TRec)
  Dim b As Variant
  x.f = b
  b = x.f
End Sub

target disasm lines:
  modProbe.Proc_40146C | 40146F    FDF0 0C000400         FMemStVarCopy [arg_C+0x4]
