Re: Problems with rewinddir() on RTEMS

[Ralf Corsepius <ralf dot corsepius at rtems dot org>]

On 07/05/2010 01:47 PM, Corinna Vinschen wrote:
> On Jul  5 11:24, Sebastian Huber wrote:
> > Hi,
> >
> > on some platforms RTEMS uses a 64-bit type for off_t (in particular PowerPC).
> > The function rewinddir() is implemented (libc/posix/rewinddir.c) in terms of:
> >
> > _seekdir((dirp), (off_t)0);
> >
> > For _seekdir() no prototype is present.  GCC chooses to pass (off_t) 0 as a
> > 64-bit parameter (on PowerPC r5 and r6).  On the other hand we have
> > (libc/posix/telldir.c):
> >
> > void
> > _DEFUN(_seekdir, (dirp, loc),
> > 	register DIR *dirp _AND
> > 	long loc)
> >
> > Which has a different signature compared to above (on PowerPC r4 will contain
> > loc).  We must declare _seekdir() somewhere.
>
> Not only _seekdir is wrongly defined taking a long type, seekdir is,
> too, and telldir is wrongly defined returning a long.  Both functions
> should use off_t per POSIX.

Hmm? Opengroup says otherwise:

void seekdir(DIR *dirp, long loc);
long           telldir(DIR *);

Ralf