IBT/BTI instructions and D compilers

[Brian Callahan]

On Monday, 10 July 2023 at 14:19:38 UTC, Iain Buclaw wrote:
> On Monday, 10 July 2023 at 13:25:37 UTC, Brian Callahan wrote:
>> On Monday, 10 July 2023 at 13:08:03 UTC, Ernesto Castellotti 
>> wrote:
>>>
>>> For LDC it should be very simple to do the same, it would be 
>>> useful to open an issue in the LDC repo
>>>
>>> The real problem is DMD, I'm afraid it needs some tweaking in 
>>> the backend
>>
>> Good idea. I made an Issue on GitHub for LDC and I made a 
>> Bugzilla report for DMD.
>
> I did raise a bug report back in 2020
>
> https://issues.dlang.org/show_bug.cgi?id=20933
>
> I guess I didn't word it clearly enough. :-)

Hi Iain --

Yes, it is. We do enable it by default on OpenBSD :)
More specifically, this is the -fcf-protection=branch flag -- no 
shadow stack stuff here.