What do you mean by "runtime polymorphism" here? Vtable dispatches? Something else? I guess I'm confused by the mention of call graph roots; in my mind those a

What do you mean by "runtime polymorphism" here? Vtable dispatches? Something else? I guess I'm confused by the mention of call graph roots; in my mind those are just ... entry points. Edges in the call graph might be a PITA to follow in a debugger because of indirections like vtables/optimizer inlining/etc., but isn't that separate? Or is my terminology model wrong?