File: generic-type-collision.rs

package info (click to toggle)
rustc-web 1.78.0%2Bdfsg1-2~deb12u3
  • links: PTS, VCS
  • area: main
  • in suites: bookworm
  • size: 1,245,420 kB
  • sloc: xml: 147,985; javascript: 18,022; sh: 11,083; python: 10,265; ansic: 6,172; cpp: 5,023; asm: 4,390; makefile: 4,269
file content (18 lines) | stat: -rw-r--r-- 408 bytes parent folder | download | duplicates (6) 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
 
//@ check-pass
//@ run-rustfix
//@ edition 2018
#![warn(rust_2021_prelude_collisions)]

trait MyTrait<A> {
    fn from_iter(x: Option<A>);
}

impl<T> MyTrait<()> for Vec<T> {
    fn from_iter(_: Option<()>) {}
}

fn main() {
    <Vec<i32>>::from_iter(None);
    //~^ WARNING trait-associated function `from_iter` will become ambiguous in Rust 2021
    //~^^ WARNING this is accepted in the current edition
}