25 lines
536 B
Rust
25 lines
536 B
Rust
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// compile-flags: -Z unstable-options
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#![feature(rustc_private)]
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#![deny(rustc::potential_query_instability)]
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extern crate rustc_data_structures;
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use rustc_data_structures::fx::{FxHashMap, FxHashSet};
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fn main() {
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let mut x = FxHashMap::<u32, i32>::default();
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for _ in x.drain() {}
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//~^ ERROR using `drain` can result in unstable
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for _ in x.iter() {}
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//~^ ERROR using `iter`
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for _ in Some(&mut x).unwrap().iter_mut() {}
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//~^ ERROR using `iter_mut`
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for _ in x {}
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//~^ ERROR using `into_iter`
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}
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