mirror of https://github.com/rust-lang/rust
52 lines
2.6 KiB
Plaintext
52 lines
2.6 KiB
Plaintext
error[E0277]: expected a `Fn(&isize)` closure, found `unsafe fn(isize) -> isize {square}`
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--> $DIR/unboxed-closures-wrong-arg-type-extern-fn.rs:21:21
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LL | let x = call_it(&square, 22);
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| ------- ^^^^^^^ call the function in a closure: `|| unsafe { /* code */ }`
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| |
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| required by a bound introduced by this call
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= help: the trait `for<'a> Fn<(&'a isize,)>` is not implemented for fn item `unsafe fn(isize) -> isize {square}`
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= note: unsafe function cannot be called generically without an unsafe block
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note: required by a bound in `call_it`
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--> $DIR/unboxed-closures-wrong-arg-type-extern-fn.rs:10:15
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LL | fn call_it<F: Fn(&isize) -> isize>(_: &F, _: isize) -> isize {
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| ^^^^^^^^^^^^^^^^^^^ required by this bound in `call_it`
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error[E0277]: expected a `FnMut(&isize)` closure, found `unsafe fn(isize) -> isize {square}`
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--> $DIR/unboxed-closures-wrong-arg-type-extern-fn.rs:26:25
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LL | let y = call_it_mut(&mut square, 22);
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| ----------- ^^^^^^^^^^^ call the function in a closure: `|| unsafe { /* code */ }`
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| |
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| required by a bound introduced by this call
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= help: the trait `for<'a> FnMut<(&'a isize,)>` is not implemented for fn item `unsafe fn(isize) -> isize {square}`
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= note: unsafe function cannot be called generically without an unsafe block
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note: required by a bound in `call_it_mut`
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--> $DIR/unboxed-closures-wrong-arg-type-extern-fn.rs:13:19
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LL | fn call_it_mut<F: FnMut(&isize) -> isize>(_: &mut F, _: isize) -> isize {
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| ^^^^^^^^^^^^^^^^^^^^^^ required by this bound in `call_it_mut`
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error[E0277]: expected a `FnOnce(&isize)` closure, found `unsafe fn(isize) -> isize {square}`
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--> $DIR/unboxed-closures-wrong-arg-type-extern-fn.rs:31:26
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LL | let z = call_it_once(square, 22);
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| ------------ ^^^^^^ call the function in a closure: `|| unsafe { /* code */ }`
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| required by a bound introduced by this call
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= help: the trait `for<'a> FnOnce<(&'a isize,)>` is not implemented for fn item `unsafe fn(isize) -> isize {square}`
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= note: unsafe function cannot be called generically without an unsafe block
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note: required by a bound in `call_it_once`
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--> $DIR/unboxed-closures-wrong-arg-type-extern-fn.rs:16:20
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LL | fn call_it_once<F: FnOnce(&isize) -> isize>(_: F, _: isize) -> isize {
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| ^^^^^^^^^^^^^^^^^^^^^^^ required by this bound in `call_it_once`
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error: aborting due to 3 previous errors
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For more information about this error, try `rustc --explain E0277`.
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