void* pointers get corrupted: D bug or misunderstanding?

[Federico Santamorena]

On Sunday, 28 July 2019 at 18:59:59 UTC, Adam D. Ruppe wrote:
> On Sunday, 28 July 2019 at 18:54:48 UTC, Federico Santamorena 
> wrote:
>> void resultFound(immutable(FileInfo) result, void* userObject)
>
> Is FileInfo the class from gtkd or is it something else?

https://github.com/yatima1460/Drill/blob/576b4b691ea5357e5271115433eb11d4c0beeae7/Source/Backend/FileInfo.d