mirror of https://github.com/rust-lang/rust
30 lines
655 B
Rust
30 lines
655 B
Rust
use std::ops::AddAssign;
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#[derive(Clone)]
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struct Int(i32);
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impl AddAssign for Int {
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fn add_assign(&mut self, _: Int) {
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unimplemented!()
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}
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}
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fn main() {
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let mut x = Int(1); //~ NOTE binding `x` declared here
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x
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//~^ NOTE borrow of `x` occurs here
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+=
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x;
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//~^ ERROR cannot move out of `x` because it is borrowed
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//~| move out of `x` occurs here
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//~| HELP consider cloning
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let y = Int(2);
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//~^ HELP consider changing this to be mutable
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//~| SUGGESTION mut
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y //~ ERROR cannot borrow `y` as mutable, as it is not declared as mutable
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//~| cannot borrow as mutable
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+=
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Int(1);
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}
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