dmd -O causes incorrect output

[Saurabh Das]

On Monday, 25 January 2021 at 19:18:47 UTC, H. S. Teoh wrote:
> On Mon, Jan 25, 2021 at 06:45:43PM +0000, Saurabh Das via 
> Digitalmars-d-learn wrote:
>> On Monday, 25 January 2021 at 18:19:24 UTC, H. S. Teoh wrote:
> [...]
>> > It's probably a bug. File a bug on bugzilla: 
>> > https://issues.dlang.org
> [...]
>> > DMD's backend is known to have obscure bugs that crop up 
>> > every so often.  If this issue is being a showstopper, 
>> > consider switching to LDC or GDC instead.  (You might want 
>> > to try the same code with LDC/GDC anyway, just to see 
>> > whether they have the same problem. My guess is they don't.)
> [...]
>> LDMD2 seems to not suffer from this issue.
>
> No surprise there. I recommend using LDC (ldmd2) instead.
>
> Still file the bug, though, so that somebody will fix it 
> eventually.
>
>
> T

Thanks for the inputs. I'll fill a bug report about it.