Unknown compilerproc "fpc_write_text_enum_iso

The compiler complains about a missing compilerproc that should be defined in {$mode extendedpascal} Given:

{$mode extendedpascal}
type
  fruits = (apple, banana, citrus);   
var
  a:fruits;
begin
  Writeln(pred(high(a))));
  ReadLn;
end.

The exact error is : "Fatal: (6046) Unknown compilerproc "fpc_write_text_enum_iso". Check if you use the correct run time library." As far as I know, extendedpascal mode should work on all major platforms. It usually does. If you comment out the mode, it works, but it should work.