False positive on Delegate functions when superclass defines the conformance

[WJacobsNL]

I found false positives in our project on "unused functions"

For instance, I got the result that the func scrollViewDidScroll(_ scrollView: UIScrollView) is not being used. But actually the superclass of my class already conforms to the UIScrollViewDelegate, so this function is being called in the end.

I also noticed the same, when conforming to a UITableViewDelegate protocol, the UIScrollViewDelegate methods are flagged as being unused, while conforming to UITableViewDelegate, also makes you conform to UIScrollViewDelegate (and the functions are being triggered)

[ileitch]

I am unable to reproduce this. Can you please provide a sample project that demonstrates the issue?

[WJacobsNL]

I made a very small project that shows the inheritance problem. If you run periphery scan on this project, it marks scrollViewDidScroll(_:) as unused

PeripheryTest.zip