Hi, first of all I hope this is the right address to pose my problem. If it is not then I apologise for wasting your time. I recently came across GPC and I am now trying to convert a huge Turbo Pascal program (15000 lines total in various units) to a UNIX executable. I thankfully wrote the code fairly modular so I did not expect many problems. However, already the first few units containing all type definitions seem to cause problems. I get the message Overflow in implicit constant conversion at the end of the interface part (i.e. where implementation starts). I only use a handful constants and even after I commented them out I got the same message. I wrote a small unit typedefs as follows:

unit typedefs;

interface

type longint = __long__ Integer; byte = __byte__ Integer; extended = __long__ Real; word = __short__ Integer; longstring = String[255]; shortint = __byte__ Integer;

implementation

begin end.

The interface part of the failing unit contains a few hundred type definitions and various variables all using those types (longint,bytes etc.). Is that what the problem is and if yes how can I avoid it? Any info much appreciated Robert Ketzscher