doc: more guess on why PyType failed

discord9 · discord9 · commit 05dbae117a44 · 2022-09-24T22:27:12.000+08:00
diff --git a/vm/src/builtins/type.rs b/vm/src/builtins/type.rs
@@ -50,7 +50,10 @@ pub struct PyType {
 #[cfg(feature = "gc")]
 impl crate::object::gc::GcTrace for PyType {
     fn trace(&self, tracer_fn: &mut crate::object::gc::TracerFn) {
-        // FIXME(discord9): figure out correct trace() for PyType, simply call each field results in underflow of rc, is PyType all leaked()?
+        // FIXME(discord9): figure out correct trace() for PyType, 
+        // simply call each field results in underflow of rc, is PyType all leaked()?
+        // might have to do with similiar problem before which only use PyInner<Erased>(through `.as_object()`) can access header() with correct data
+        // but PyInner<T> access header() with wrong data, but not sure about that.
         self.base.trace(tracer_fn);
         self.bases.trace(tracer_fn);
         self.mro.trace(tracer_fn);
