Can we use "ImportC" used yet?

[Dave P.]

On Friday, 22 October 2021 at 06:11:35 UTC, data pulverizer wrote:
> On Thursday, 21 October 2021 at 23:06:18 UTC, jfondren wrote:
>> [...]
>
> I've double-checked and the types names are fine in translated 
> C file.
>
> [...]

I think you ran into this 
[issue](https://issues.dlang.org/show_bug.cgi?id=22404). The bug 
fix isn’t part of a released dmd yet.