[fpc-pascal] Documentation or compiler bug?

[Michael Van Canneyt]

On Sat, 8 Jul 2023, Hairy Pixels via fpc-pascal wrote:

> In fact I filed a bug today which was related. Notice how I didn't use cdecl in the program but another user tried to compile and had problems with cdecl also.
>
> https://gitlab.com/freepascal.org/fpc/source/-/issues/40342 <https://gitlab.com/freepascal.org/fpc/source/-/issues/40342#note_1462402401>
>
> Basically this program:
>
> {$mode objfpc}
>
> program test;
>
> function printf(format: PChar): Integer; external; cdecl; varargs;

You must put the cdecl (which is the calling convention) before the external:

{$linklib c}

function printf(format: PChar): Integer; cdecl; external; varargs;

begin
   printf('%d is the answer'#10,42)
end.

Will work and will print

42 is the answer

Michael.