mirror of https://github.com/rust-lang/rust
21 lines
555 B
Rust
21 lines
555 B
Rust
// Test that two distinct impls which match subtypes of one another
|
|
// yield coherence errors (or not) depending on the variance.
|
|
//
|
|
// Note: This scenario is currently accepted, but as part of the
|
|
// universe transition (#56105) may eventually become an error.
|
|
|
|
//@ check-pass
|
|
|
|
trait TheTrait {
|
|
fn foo(&self) {}
|
|
}
|
|
|
|
impl TheTrait for for<'a, 'b> fn(&'a u8, &'b u8) -> &'a u8 {}
|
|
|
|
impl TheTrait for for<'a> fn(&'a u8, &'a u8) -> &'a u8 {
|
|
//~^ WARN conflicting implementation
|
|
//~| WARN the behavior may change in a future release
|
|
}
|
|
|
|
fn main() {}
|