rust/tests/ui/consts/static-default-lifetime/static-trait-impl.rs
Nicholas Nethercote 7e8184fa2a Improve AssocItem::descr.
The commit adds "associated" to the description of associated types and
associated consts, to match the description of associated functions.
This increases error message precision and consistency with
`AssocKind::fmt`.

The commit also notes an imperfection in `AssocKind::fmt`; fixing this
imperfection is possible but beyond the scope of this PR.
2025-04-11 11:03:08 +10:00

34 lines
780 B
Rust

#![deny(elided_lifetimes_in_associated_constant)]
trait Bar<'a> {
const STATIC: &'a str;
}
struct A;
impl Bar<'_> for A {
const STATIC: &str = "";
//~^ ERROR `&` without an explicit lifetime name cannot be used here
//~| WARN this was previously accepted by the compiler but is being phased out
//~| ERROR lifetime parameters or bounds on associated const `STATIC` do not match the trait declaration
}
struct B;
impl Bar<'static> for B {
const STATIC: &str = "";
}
struct C;
impl Bar<'_> for C {
// make ^^ not cause
const STATIC: &'static str = {
struct B;
impl Bar<'static> for B {
const STATIC: &str = "";
// ^ to emit a future incompat warning
}
""
};
}
fn main() {}