Warning re ignored return value

[Steven Schveighoffer]

On 8/4/22 7:39 PM, Don Allen wrote:
> Is there a way to request that dmd warn about instances where the return 
> values of non-void functions are ignored? dmd appears not to do that by 
> default and I checked the documentation of the command-line options and 
> didn't see it (hopefully I missed it; it would be nice to have).
> 

Not sure if it's implemented yet but there's @mustuse:

https://github.com/dlang/DIPs/blob/master/DIPs/accepted/DIP1038.md

-Steve