Zcoin implementation bug enabled attacker to create 548, 000 Zcoins

[ketmar via Digitalmars-d]

John Colvin wrote:

> On Thursday, 9 March 2017 at 15:55:07 UTC, deadalnix wrote:
>> On Thursday, 9 March 2017 at 15:42:22 UTC, qznc wrote:
>>> I'm curious. Where does it make sense for opEquals to be non-pure? 
>>> Likewise opCmp, etc.
>>>
>>
>> When the object need some kind of normalization to be comparable and you 
>> don't want to do the normalization every single time.
>
> I wonder how stupid it would be to cast the implementation to pure in 
> this case.

as any other lie. broken promise == UB. while current compiler *may* 
tolerate it, broken promise is a broken promise.