Fix #[track_caller] shims for trait objects.
We were missing an Instance::resolve_for_fn_ptr in resolve_for_vtable.
Closes #74764.
debug!(" => associated item with unsizeable self: Self");
Some(Instance { def: InstanceDef::VtableShim(def_id), substs })
} else {
- Instance::resolve(tcx, param_env, def_id, substs).ok().flatten()
+ Instance::resolve_for_fn_ptr(tcx, param_env, def_id, substs)
}
}
--- /dev/null
+// run-pass
+
+trait Tracked {
+ #[track_caller]
+ fn handle(&self) {
+ let location = std::panic::Location::caller();
+ assert_eq!(location.file(), file!());
+ // we only call this via trait object, so the def site should *always* be returned
+ assert_eq!(location.line(), line!() - 4);
+ assert_eq!(location.column(), 5);
+ }
+}
+
+impl Tracked for () {}
+impl Tracked for u8 {}
+
+fn main() {
+ let tracked: &dyn Tracked = &5u8;
+ tracked.handle();
+
+ const TRACKED: &dyn Tracked = &();
+ TRACKED.handle();
+}