rust/tests/ui/traits/trait-implementation-restriction-5988.rs

// https://github.com/rust-lang/rust/issues/5988
//@ run-pass

trait B {
    fn f(&self);
}

trait T : B {
}

struct A;

impl<U: T> B for U {
    fn f(&self) { }
}

impl T for A {
}

fn main() {
    let a = A;
    let br = &a as &dyn B;
    br.f();
}
Add test batch 1 2025-08-20 14:02:39 -04:00			`// https://github.com/rust-lang/rust/issues/5988`
Add `// run-pass` annotations to all the tests under `ui/run-pass/`. (I may have accidentally added it to some auxilliary crates as well; my emacs-macro-based methodology was pretty crude.) 2018-08-30 14:18:55 +02:00			`//@ run-pass`
rustdoc: Replace no-pretty-expanded with pretty-expanded Now that features must be declared expanded source often does not compile. This adds 'pretty-expanded' to a bunch of test cases that still work. 2015-03-22 13:13:15 -07:00
Add tests for E-needstest issues 2014-12-07 15:22:06 +00:00			`trait B {`
			`fn f(&self);`
			`}`

			`trait T : B {`
			`}`

			`struct A;`

			`impl<U: T> B for U {`
test: Fix fallout in run-pass tests 2015-04-10 11:12:43 -07:00			`fn f(&self) { }`
Add tests for E-needstest issues 2014-12-07 15:22:06 +00:00			`}`

			`impl T for A {`
			`}`

			`fn main() {`
			`let a = A;`
Update run-pass test suite to use dyn 2019-05-28 14:47:21 -04:00			`let br = &a as &dyn B;`
Add tests for E-needstest issues 2014-12-07 15:22:06 +00:00			`br.f();`
			`}`