{"ast_node_type":"variable","tokens":[{"end":95,"kind":"keyword","start":0,"text":"let"}]}
    let mut allocation = Allocation::new(layout.size, layout.align.abi, AllocInit::Uninit, ());
    let scalar_meta: Scalar = Scalar::from_target_usize(meta, &cx.tcx);
    let ptr_size = cx.tcx.data_layout.pointer_size();