mirror of
https://github.com/rust-lang/rust.git
synced 2024-11-28 09:44:08 +00:00
21 lines
419 B
Rust
21 lines
419 B
Rust
#![feature(const_trait_impl)]
|
|
|
|
// revisions: yy yn ny nn
|
|
|
|
#[cfg_attr(any(yy, yn), const_trait)]
|
|
trait Foo {
|
|
fn a(&self);
|
|
}
|
|
|
|
#[cfg_attr(any(yy, ny), const_trait)]
|
|
trait Bar: ~const Foo {}
|
|
//[ny,nn]~^ ERROR: ~const can only be applied to `#[const_trait]`
|
|
//[ny,nn]~| ERROR: ~const can only be applied to `#[const_trait]`
|
|
|
|
const fn foo<T: Bar>(x: &T) {
|
|
x.a();
|
|
//[yn,yy]~^ ERROR the trait bound
|
|
}
|
|
|
|
fn main() {}
|