{"ast_node_type":"function","tokens":[{"end":27,"kind":"keyword","start":0,"text":"fn"}]}
fn test_impl_fn_for_zst() {
#[test]
    // From <https://github.com/rust-lang/rust/blob/5d20ff4d2718c820632b38c1e49d4de648a9810b/src/libcore/internal_macros.rs>.