D2 is really that stable as it is claimed to be?

[Maxim Fomin]

On Saturday, 21 September 2013 at 22:36:44 UTC, Walter Bright 
wrote:
>
> Ok, so it found a latent bug in the source code - I don't think 
> that's a good example of dmd being unstable - it was a good 
> change.

OK, this was a latent bug in sources. I think this is not the 
first and not the last event when dmd starts rejecting buggy 
code. However that means that before the change dmd accepted 
invalid and this jeopardizes D implementation. And anyway, 
irrespectively of whether issue is a true regression or fixing 
accepts-invalid bug, for majority of users this doesn't play much 
role but means creating problems of code breakage in each release.