Bug#924712: crypt() not available _XOPEN_SOURCE is defined

[Laurent Bigonville <bigon@debian.org>]

Le 19/03/19 à 19:43, Florian Weimer a écrit :
> * Laurent Bigonville:
>
> > Package: libc6-dev
> > Version: 2.28-8
> > Severity: serious
> >
> > Hi,
> >
> > The crypt.3 manpage, state that _XOPEN_SOURCE should be define for
> > crypt() to be available.
> >
> > But it looks that it's currently the opposite, if _XOPEN_SOURCE is
> > defined, the function cannot be found.
> Can you compile the software using _DEFAULT_SOURCE (well, the default)
> or _GNU_SOURCE instead?

Yes, the software can be compile when _XOPEN_SOURCE is not defined or 
when _GNU_SOURCE is defined instead

> We do not want to provide the CRYPT extension anymore because it
> implies not just support for the crypt function, but also for the DES
> encryption functions, which definitely do not want.  In _XOPEN_SOURCE
> mode, it's either all of these functions or none of them (and we chose
> the latter because of DES), otherwise glibc wouldn't conform to the
> interface specification.
>
> We definitely should update the manual page, though.