rust/tests/ui/methods/method-two-trait-defer-reso...

38 lines
604 B
Rust

//@ run-pass
#![allow(non_camel_case_types)]
// Test that we pick which version of `foo` to run based on the
// type that is (ultimately) inferred for `x`.
trait foo {
fn foo(&self) -> i32;
}
impl foo for Vec<u32> {
fn foo(&self) -> i32 {1}
}
impl foo for Vec<i32> {
fn foo(&self) -> i32 {2}
}
fn call_foo_uint() -> i32 {
let mut x = Vec::new();
let y = x.foo();
x.push(0u32);
y
}
fn call_foo_int() -> i32 {
let mut x = Vec::new();
let y = x.foo();
x.push(0i32);
y
}
fn main() {
assert_eq!(call_foo_uint(), 1);
assert_eq!(call_foo_int(), 2);
}