Re: BUG #19583: macaddr input accepts octet fields longer than 8 hex digits

> On 1 Aug 2026, at 03:40, Zexin Li <lizi(dot)openmind(at)gmail(dot)com> wrote:

Thanks for the patch!

> * Two undocumented forms that were previously accepted with the correct
> value become errors: fields zero-padded past two digits
> ('001:00:2b:01:02:03') and 0x-prefixed fields ('0xff:0:0:0:0:0').
> Neither can be produced by macaddr_out, so dumps and restores are
> unaffected; the tightening would only bite text held outside the
> database (COPY input, application SQL) that relies on those forms.

This doesn't seem like something we can backpatch though. Our tools might not
produce them, but they may exist in queries and 3rd party tooling which should
not break in a minor rev. I'm not convinced that either of these should be
promoted to errors even in a major rev.

--
Daniel Gustafsson