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