[fpc-pascal] Bugs in StrToHostAddr6 in sockets unit

Michael Van Canneyt michael at freepascal.org
Thu May 7 11:17:36 CEST 2020

On Thu, 7 May 2020, Noel Duffy via fpc-pascal wrote:

> On 6/05/20 11:21 pm, Christo Crause via fpc-pascal wrote:
> > On Wed, May 6, 2020 at 12:19 PM Noel Duffy via fpc-pascal
> > <fpc-pascal at lists.freepascal.org
> > <mailto:fpc-pascal at lists.freepascal.org>>
> > wrote:
> >
> >     So I guess the question is, is it worth the effort to make
> >     StrToHostAddr6 RFC4291 compliant? Is that something the FPC team 
> would
> >     want, or do they just not use the sockets unit?
> >
> >
> > There have been 2 changes applied to sockets.inc in the last two
> > months so it is not neglected. I am convinced a patch to ensure
> > compliance will be considered for inclusion, especially if you
> > provide test cases demonstrating shortcomings in the current
> > implementation.
> Great. My worry was that the sockets unit might fall into the same 
> category as the libc one, available but deprecated and not recommended 
> for use. Plus, when rewriting something that's been unchanged for years, 
> there's a risk of breaking programs that depend on the bug.

I think the processing of wrong IP addresses and missing IPv4-ending
addresses support is not really something one depends on :)
So fixing this is quite OK.


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