2017-03-25 5:40 GMT-03:00 Sven Barth via fpc-pascal < fpc-pascal@lists.freepascal.org>:
> Am 24.03.2017 19:55 schrieb "Michael Van Canneyt" <mich...@freepascal.org > >: > > > > > > > > On Fri, 24 Mar 2017, African Wild Dog wrote: > > > >> Hello, > >> > >> I need to write a code compatilble with both free pascal and delphi > using > >> the old style RTTI. > >> What are the diferences between delphi's and free pascal's > approach/types? > >> > >> I took a look at delphi's and fpc's TypInfo unit and it looks like the > >> types/functions are compatible. > > > > > > They are. There is one dereference on Delphi which is not present in fpc, > > although in fpc trunk, this additional dereference is there. If you use > the > > standard functions you should not notice this. > > The binary data of RTTI added before 3.1.1 now has the double indirection, > but the Delphi-compatible "field" names have only a single indirection for > backwards compatibility (they are properties to the double indirection > fields). RTTI data added in 3.1.1 only has the double indirection. > So this difference needs to be kept in mind and will always result in > ifdefs for RTTI code that handles both Delphi and FPC. > > Regards, > Sven > > Thanks for the clarifications. Regards
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