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76 lines
1.4 KiB
Rust
76 lines
1.4 KiB
Rust
// https://github.com/rust-lang/rust/issues/43869
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#![crate_name="foo"]
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pub fn g() -> impl Iterator<Item=u8> {
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Some(1u8).into_iter()
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}
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#[allow(unused_parens)]
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pub fn h() -> (impl Iterator<Item=u8>) {
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Some(1u8).into_iter()
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}
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pub fn i() -> impl Iterator<Item=u8> + 'static {
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Some(1u8).into_iter()
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}
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pub fn j() -> impl Iterator<Item=u8> + Clone {
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Some(1u8).into_iter()
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}
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pub fn k() -> [impl Clone; 2] {
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[123u32, 456u32]
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}
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pub fn l() -> (impl Clone, impl Default) {
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(789u32, -123i32)
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}
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pub fn m() -> &'static impl Clone {
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&1u8
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}
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pub fn n() -> *const impl Clone {
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&1u8
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}
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pub fn o() -> &'static [impl Clone] {
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b":)"
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}
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// issue #44731
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pub fn test_44731_0() -> Box<impl Iterator<Item=u8>> {
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Box::new(g())
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}
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pub fn test_44731_1() -> Result<Box<impl Clone>, ()> {
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Ok(Box::new(j()))
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}
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// NOTE these involve Fn sugar, where impl Trait is disallowed for now, see issue #45994
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//
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//pub fn test_44731_2() -> Box<Fn(impl Clone)> {
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// Box::new(|_: u32| {})
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//}
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//
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//pub fn test_44731_3() -> Box<Fn() -> impl Clone> {
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// Box::new(|| 0u32)
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//}
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pub fn test_44731_4() -> Box<Iterator<Item=impl Clone>> {
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Box::new(g())
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}
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//@ has foo/fn.g.html
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//@ has foo/fn.h.html
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//@ has foo/fn.i.html
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//@ has foo/fn.j.html
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//@ has foo/fn.k.html
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//@ has foo/fn.l.html
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//@ has foo/fn.m.html
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//@ has foo/fn.n.html
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//@ has foo/fn.o.html
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//@ has foo/fn.test_44731_0.html
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//@ has foo/fn.test_44731_1.html
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//@ has foo/fn.test_44731_4.html
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