rust/tests/ui/nll/projection-return.rs

// check-pass

#![feature(rustc_attrs)]

trait Foo {
    type Bar;
}

impl Foo for () {
    type Bar = u32;
}

fn foo() -> <() as Foo>::Bar {
    22
}

fn main() { }
Use check-pass mode for nll tests 2020-01-23 00:00:00 +00:00			`// check-pass`
impose inputs/ouputs on MIR after the fact The input/output types found in `UniversalRegions` are not normalized. The old code used to assign them directly into the MIR, which would lead to errors when there was a projection in a argument or return type. This also led to some special cases in the `renumber` code. We now renumber uniformly but then pass the input/output types into the MIR type-checker, which equates them with the types found in MIR. This allows us to normalize at the same time. 2017-12-06 04:30:58 -05:00
			`#![feature(rustc_attrs)]`

			`trait Foo {`
			`type Bar;`
			`}`

			`impl Foo for () {`
			`type Bar = u32;`
			`}`

			`fn foo() -> <() as Foo>::Bar {`
			`22`
			`}`

			`fn main() { }`