Release D 2.089.0

[John Chapman]

On Tuesday, 5 November 2019 at 06:44:29 UTC, Manu wrote:
> On Mon., 4 Nov. 2019, 2:05 am John Chapman via 
> Digitalmars-d-announce, < digitalmars-d-announce at puremagic.com> 
> wrote:
>
>> Something has changed with core.atomic.cas - it used to work 
>> with `null` as the `ifThis` argument, now it throws an AV. Is 
>> this intentional?
>>
>> If I use `cast(shared)null` it doesn't throw but if the change 
>> was deliberate shouldn't it be mentioned?
>>
>
> Changes were made because there were a lot of problems with 
> that module...
> but the (reasonably comprehensive) unit tests didn't reveal any 
> such
> regressions. We also build+test many popular OSS projects via 
> buildkite,
> and there weren't problems.
> Can you show the broken code?

Sure - this AVs on DMD 2.088 Windows:

import core.atomic;
void main() {
   Object a, b = new Object;
   cas(cast(shared)&a, null, cast(shared)b);
}