Problems with rewinddir() on RTEMS

Ralf Corsepius
Mon Jul 5 15:49:00 GMT 2010

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 *);


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