Never mind, it seems I found the bug.
May I suggest something in the docs a bit more explicit than it is...
Regards and many_ thanks
On Mon, 31 Mar 2003, Tom Lane wrote:
> Date: Mon, 31 Mar 2003 13:24:42 -0500
> From: Tom Lane <tgl@sss.pgh.pa.us>
> To: ohp@pyrenet.fr
> Cc: pgsql-hackers list <pgsql-hackers@postgresql.org>
> Subject: Re: [HACKERS] What's wrong
>
> ohp@pyrenet.fr writes:
> > It worked fine in 7.2 but now IFAICS, it never gives the original result
> > and moreover, if I run SELECT sql_crypt('xxx','xxx') several times, it
> > gives 3 diferent results and loops other those 3 results.
>
> I would've expected it to be unreliable under previous versions too.
> AFAICS you aren't taking care to ensure that the inputs to crypt()
> are null-terminated.
>
> regards, tom lane
>
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