Incorrect hint (5023) "unit not used", if unit is only used in a conditional compiler expression (like: {$IF ..})

Consider the follwoing program:

program test;

uses
  Version;

begin
  {$if TheVersion >= 1}
  writeln('Version 1 or higher');
  {$else}
  writeln('Version < 1');
  {$endif}
end.

unit version;

interface
const
  TheVersion = 1;

implementation

end.

Compile with -vh You get the hint: Unit "version" not used in test

This is obviously not true, without the unit version, the program won't compile.