Function rustc_middle::ty::util::needs_drop_components

source ·

pub fn needs_drop_components<'tcx>(
    tcx: TyCtxt<'tcx>,
    ty: Ty<'tcx>
) -> 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.