rust/src/test/rustdoc-ui/error-in-impl-trait/trait-alias.rs

// check-pass
#![feature(type_alias_impl_trait)]

pub trait ValidTrait {}
type ImplTrait = impl ValidTrait;

/// This returns impl trait, but using a type alias
pub fn h() -> ImplTrait {
    error::_in::impl_trait::alias()
}
Fix async-std at the price of breaking half the test suite - Don't mark impl trait as an error 2020-08-04 01:13:13 +00:00			`// check-pass`
Recurse into function bodies, but don't typeck closures Previously, rustdoc would issue a delay_span_bug ICE on the following code: ```rust pub fn a() -> impl Fn() -> u32 { \|\| content::doesnt::matter() } ``` This wasn't picked up earlier because having `type Alias = impl Trait;` in the same module caused _all closures_ to be typechecked, even if they wouldn't normally. Additionally, if _any_ error was emitted, no delay_span_bug would be emitted. So as part of this commit all of the tests were separated out into different files. 2020-07-09 13:13:59 +00:00			`#![feature(type_alias_impl_trait)]`

			`pub trait ValidTrait {}`
			`type ImplTrait = impl ValidTrait;`

			`/// This returns impl trait, but using a type alias`
			`pub fn h() -> ImplTrait {`
			`error::_in::impl_trait::alias()`
			`}`