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

[Florian Weimer <fw@deneb.enyo.de>]

* Laurent Bigonville:

> 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

Sorry, what I was trying to ask is whether this would be an acceptable
change for you.