Are there any downsides to passing structs by value in C, rather than passing a pointer?

Question

Are there any downsides to passing structs by value in C, rather than passing a pointer?

If the struct is large, there is obviously the performancd aspect of copying

Answer 1

I think that your question has summed things up pretty well.

One other advantage of passing structs by value is that memory ownership is explicit. There is no wondering about if the struct is from the heap, and who has the responsibility for freeing it.