pub fn needs_drop_components_with_async<'tcx>(
tcx: TyCtxt<'tcx>,
ty: Ty<'tcx>,
asyncness: Asyncness,
) -> Result<SmallVec<[Ty<'tcx>; 2]>, AlwaysRequiresDrop>
Expand description
Returns a list of types such that the given type needs drop if and only if
any of the returned types need drop. Returns Err(AlwaysRequiresDrop)
if
this type always needs drop.