How do I obtain the default hash of a user-defined struct

[dnspies]

On Thursday, 3 April 2014 at 23:01:27 UTC, Steven Schveighoffer 
wrote:
> On Thu, 03 Apr 2014 17:42:16 -0400, bearophile 
> <bearophileHUGS at lycos.com> wrote:
>
>
>> I have filed this big problem four years ago or more.
>
> Bug report?
>
> -Steve

This is the closest I could find:

https://d.puremagic.com/issues/show_bug.cgi?id=11025

Here's a couple other related bugs:

https://d.puremagic.com/issues/show_bug.cgi?id=12516

https://d.puremagic.com/issues/show_bug.cgi?id=10374

https://d.puremagic.com/issues/show_bug.cgi?id=1926