1 #![feature(decl_macro, rustc_attrs)]
2 #![deny(single_use_lifetimes)]
6 fn f<$T: Clone, T: PartialEq>(t1: $T, t2: T) -> ($T, bool) {
11 #[rustc_macro_transparency = "semitransparent"]
13 fn g<$T: Clone>(t1: $T, t2: T) -> (T, $T) {
14 (t1.clone(), t2.clone())
16 fn h<T: Clone>(t1: $T, t2: T) -> (T, $T) {
17 (t1.clone(), t2.clone())
21 #[rustc_macro_transparency = "transparent"]
23 fn j<$T: Clone>(t1: $T, t2: T) -> (T, $T) {
24 (t1.clone(), t2.clone())
26 fn k<T: Clone>(t1: $T, t2: T) -> (T, $T) {
27 (t1.clone(), t2.clone())
37 macro m($a:lifetime) {
38 fn f<'b, 'c, $a: 'b, 'a: 'c>(t1: &$a(), t2: &'a ()) -> (&'b (), &'c ()) { //~ ERROR lifetime parameter `'a` only used once
43 #[rustc_macro_transparency = "semitransparent"]
44 macro n($a:lifetime) {
45 fn g<$a>(t1: &$a(), t2: &'a ()) -> (&'a (), &$a ()) {
48 fn h<'a>(t1: &$a(), t2: &'a ()) -> (&'a (), &$a ()) {
53 #[rustc_macro_transparency = "transparent"]
54 macro p($a:lifetime) {
55 fn j<$a>(t1: &$a(), t2: &'a ()) -> (&'a (), &$a ()) {
58 fn k<'a>(t1: &$a(), t2: &'a ()) -> (&'a (), &$a ()) {
63 m!('a); //~ ERROR lifetime parameter `'a` only used once
70 fn f<const $C: usize, const C: usize>(t1: [(); $C], t2: [(); C]) -> ([(); $C], [(); C]) {
75 #[rustc_macro_transparency = "semitransparent"]
77 fn g<const $C: usize>(t1: [(); $C], t2: [(); C]) -> ([(); C], [(); $C]) {
80 fn h<const C: usize>(t1: [(); $C], t2: [(); C]) -> ([(); C], [(); $C]) {
85 #[rustc_macro_transparency = "transparent"]
87 fn j<const $C: usize>(t1: [(); $C], t2: [(); C]) -> ([(); C], [(); $C]) {
90 fn k<const C: usize>(t1: [(); $C], t2: [(); C]) -> ([(); C], [(); $C]) {