mirror of
https://github.com/rust-lang/rust.git
synced 2024-12-04 20:54:13 +00:00
25 lines
536 B
Rust
25 lines
536 B
Rust
// compile-flags: -Z unstable-options
|
|
|
|
#![feature(rustc_private)]
|
|
#![deny(rustc::potential_query_instability)]
|
|
|
|
extern crate rustc_data_structures;
|
|
|
|
use rustc_data_structures::fx::{FxHashMap, FxHashSet};
|
|
|
|
fn main() {
|
|
let mut x = FxHashMap::<u32, i32>::default();
|
|
|
|
for _ in x.drain() {}
|
|
//~^ ERROR using `drain` can result in unstable
|
|
|
|
for _ in x.iter() {}
|
|
//~^ ERROR using `iter`
|
|
|
|
for _ in Some(&mut x).unwrap().iter_mut() {}
|
|
//~^ ERROR using `iter_mut`
|
|
|
|
for _ in x {}
|
|
//~^ ERROR using `into_iter`
|
|
}
|