6384568fdb
The previous message ("cannot assign/mutably borrow immutable field")
when trying to modify a field of an immutable binding gave the
(incorrect) impression that fields can be mutable independently of their
ADT's binding. Slightly reword the message to read "cannot
assign/mutably borrow field of immutable binding".
49 lines
1.7 KiB
Plaintext
49 lines
1.7 KiB
Plaintext
error[E0499]: cannot borrow `f` as mutable more than once at a time
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--> $DIR/borrowck-call-is-borrow-issue-12224.rs:22:16
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22 | f(Box::new(|| {
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| - ^^ second mutable borrow occurs here
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| first mutable borrow occurs here
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23 | //~^ ERROR: cannot borrow `f` as mutable more than once
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24 | f((Box::new(|| {})))
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| - borrow occurs due to use of `f` in closure
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25 | }));
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| - first borrow ends here
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error[E0596]: cannot borrow immutable borrowed content `*f` as mutable
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--> $DIR/borrowck-call-is-borrow-issue-12224.rs:35:5
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34 | fn test2<F>(f: &F) where F: FnMut() {
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| -- use `&mut F` here to make mutable
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35 | (*f)();
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| ^^^^ cannot borrow as mutable
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error[E0596]: cannot borrow `Box` content `*f.f` of immutable binding as mutable
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--> $DIR/borrowck-call-is-borrow-issue-12224.rs:44:5
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43 | fn test4(f: &Test) {
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| ----- use `&mut Test` here to make mutable
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44 | f.f.call_mut(())
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| ^^^ cannot borrow as mutable
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error[E0504]: cannot move `f` into closure because it is borrowed
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--> $DIR/borrowck-call-is-borrow-issue-12224.rs:63:13
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62 | f(Box::new(|a| {
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| - borrow of `f` occurs here
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63 | foo(f);
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| ^ move into closure occurs here
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error[E0507]: cannot move out of captured outer variable in an `FnMut` closure
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--> $DIR/borrowck-call-is-borrow-issue-12224.rs:63:13
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61 | let mut f = |g: Box<FnMut(isize)>, b: isize| {};
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| ----- captured outer variable
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62 | f(Box::new(|a| {
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63 | foo(f);
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| ^ cannot move out of captured outer variable in an `FnMut` closure
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error: aborting due to 5 previous errors
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