rust/tests/ui/traits/where-clause-vs-impl.rs
2024-02-16 20:02:50 +00:00

46 lines
840 B
Rust

//@ run-pass
#![allow(dead_code)]
#![allow(unused_variables)]
// Test that when there is a conditional (but blanket) impl and a
// where clause, we don't get confused in trait resolution.
//
// Issue #18453.
//@ pretty-expanded FIXME #23616
use std::rc::Rc;
pub trait Foo<M> {
fn foo(&mut self, msg: M);
}
pub trait Bar<M> {
fn dummy(&self) -> M;
}
impl<M, F: Bar<M>> Foo<M> for F {
fn foo(&mut self, msg: M) {
}
}
pub struct Both<M, F> {
inner: Rc<(M, F)>,
}
impl<M, F: Foo<M>> Clone for Both<M, F> {
fn clone(&self) -> Both<M, F> {
Both { inner: self.inner.clone() }
}
}
fn repro1<M, F: Foo<M>>(_both: Both<M, F>) {
}
fn repro2<M, F: Foo<M>>(msg: M, foo: F) {
let both = Both { inner: Rc::new((msg, foo)) };
repro1(both.clone()); // <--- This clone causes problem
}
pub fn main() {
}