mirror of https://github.com/rust-lang/rust
25 lines
839 B
Rust
25 lines
839 B
Rust
#![feature(if_let_guard, let_chains)]
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fn main() {
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let mut x = Some(String::new());
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let ref mut y @ ref mut z = x;
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//~^ ERROR: mutable more than once
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let Some(ref mut y @ ref mut z) = x else { return };
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//~^ ERROR: mutable more than once
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if let Some(ref mut y @ ref mut z) = x {}
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//~^ ERROR: mutable more than once
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if let Some(ref mut y @ ref mut z) = x && true {}
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//~^ ERROR: mutable more than once
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while let Some(ref mut y @ ref mut z) = x {}
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//~^ ERROR: mutable more than once
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while let Some(ref mut y @ ref mut z) = x && true {}
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//~^ ERROR: mutable more than once
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match x {
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ref mut y @ ref mut z => {} //~ ERROR: mutable more than once
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}
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match () {
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() if let Some(ref mut y @ ref mut z) = x => {} //~ ERROR: mutable more than once
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_ => {}
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}
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}
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