fn variant_needs_drop<'tcx>(
tcx: TyCtxt<'tcx>,
param_env: ParamEnv<'tcx>,
substs: SubstsRef<'tcx>,
variant: &VariantDef
) -> bool
fn variant_needs_drop<'tcx>(
tcx: TyCtxt<'tcx>,
param_env: ParamEnv<'tcx>,
substs: SubstsRef<'tcx>,
variant: &VariantDef
) -> bool