mirror of
https://github.com/rust-lang/rust.git
synced 2024-11-27 17:24:06 +00:00
42 lines
1.1 KiB
Rust
42 lines
1.1 KiB
Rust
use std::fmt::Debug;
|
|
use std::option;
|
|
|
|
fn parametrized_type_is_allowed() -> Option<impl Debug> {
|
|
Some(5i32)
|
|
}
|
|
|
|
fn path_parametrized_type_is_allowed() -> option::Option<impl Debug> {
|
|
Some(5i32)
|
|
}
|
|
|
|
fn projection_is_disallowed(x: impl Iterator) -> <impl Iterator>::Item {
|
|
//~^ ERROR `impl Trait` is not allowed in path parameters
|
|
//~| ERROR `impl Trait` is not allowed in path parameters
|
|
x.next().unwrap()
|
|
}
|
|
|
|
fn projection_with_named_trait_is_disallowed(mut x: impl Iterator)
|
|
-> <impl Iterator as Iterator>::Item
|
|
//~^ ERROR `impl Trait` is not allowed in path parameters
|
|
{
|
|
x.next().unwrap()
|
|
}
|
|
|
|
fn projection_with_named_trait_inside_path_is_disallowed()
|
|
-> <::std::ops::Range<impl Debug> as Iterator>::Item
|
|
//~^ ERROR `impl Trait` is not allowed in path parameters
|
|
//~| ERROR `impl Debug: Step` is not satisfied
|
|
{
|
|
//~^ ERROR `impl Debug: Step` is not satisfied
|
|
(1i32..100).next().unwrap()
|
|
}
|
|
|
|
fn projection_from_impl_trait_inside_dyn_trait_is_disallowed()
|
|
-> <dyn Iterator<Item = impl Debug> as Iterator>::Item
|
|
//~^ ERROR `impl Trait` is not allowed in path parameters
|
|
{
|
|
panic!()
|
|
}
|
|
|
|
fn main() {}
|