File: never-from-impl-is-reserved.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 (16 lines) | stat: -rw-r--r-- 449 bytes parent folder | download | duplicates (6) 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
 
// check that the `for<T> T: From<!>` impl is reserved

//@ revisions: current next
//@ ignore-compare-mode-next-solver (explicit revisions)
//@[next] compile-flags: -Znext-solver=coherence

#![feature(never_type)]

pub struct MyFoo;
pub trait MyTrait {}

impl MyTrait for MyFoo {}
// This will conflict with the first impl if we impl `for<T> T: From<!>`.
impl<T> MyTrait for T where T: From<!> {} //~ ERROR conflicting implementation

fn main() {}