mirror of https://github.com/rust-lang/rust
44 lines
1.0 KiB
Rust
44 lines
1.0 KiB
Rust
struct Foo(Box<isize>, isize);
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struct Bar(isize, isize);
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fn main() {
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let x: (Box<_>, _) = (Box::new(1), 2);
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let r = &x.0;
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let y = x; //~ ERROR cannot move out of `x` because it is borrowed
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r.use_ref();
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let mut x = (1, 2);
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let a = &x.0;
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let b = &mut x.0; //~ ERROR cannot borrow `x.0` as mutable because it is also borrowed as
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a.use_ref();
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let mut x = (1, 2);
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let a = &mut x.0;
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let b = &mut x.0; //~ ERROR cannot borrow `x.0` as mutable more than once at a time
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a.use_ref();
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let x = Foo(Box::new(1), 2);
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let r = &x.0;
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let y = x; //~ ERROR cannot move out of `x` because it is borrowed
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r.use_ref();
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let mut x = Bar(1, 2);
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let a = &x.0;
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let b = &mut x.0; //~ ERROR cannot borrow `x.0` as mutable because it is also borrowed as
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a.use_ref();
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let mut x = Bar(1, 2);
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let a = &mut x.0;
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let b = &mut x.0; //~ ERROR cannot borrow `x.0` as mutable more than once at a time
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a.use_mut();
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}
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trait Fake { fn use_mut(&mut self) { } fn use_ref(&self) { } }
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impl<T> Fake for T { }
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