mirror of https://github.com/rust-lang/rust
49 lines
2.5 KiB
Plaintext
49 lines
2.5 KiB
Plaintext
error[E0277]: expected a `Fn(&isize)` closure, found `for<'a> extern "C" fn(&'a isize) -> isize {square}`
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--> $DIR/unboxed-closures-wrong-abi.rs:20:21
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LL | let x = call_it(&square, 22);
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| ------- ^^^^^^^ expected an `Fn(&isize)` closure, found `for<'a> extern "C" fn(&'a isize) -> isize {square}`
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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 `for<'a> extern "C" fn(&'a isize) -> isize {square}`
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note: required by a bound in `call_it`
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--> $DIR/unboxed-closures-wrong-abi.rs:9:15
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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 `for<'a> extern "C" fn(&'a isize) -> isize {square}`
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--> $DIR/unboxed-closures-wrong-abi.rs:25:25
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LL | let y = call_it_mut(&mut square, 22);
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| ----------- ^^^^^^^^^^^ expected an `FnMut(&isize)` closure, found `for<'a> extern "C" fn(&'a isize) -> isize {square}`
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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 `for<'a> extern "C" fn(&'a isize) -> isize {square}`
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note: required by a bound in `call_it_mut`
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--> $DIR/unboxed-closures-wrong-abi.rs:12:19
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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 `for<'a> extern "C" fn(&'a isize) -> isize {square}`
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--> $DIR/unboxed-closures-wrong-abi.rs:30:26
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LL | let z = call_it_once(square, 22);
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| ------------ ^^^^^^ expected an `FnOnce(&isize)` closure, found `for<'a> extern "C" fn(&'a isize) -> isize {square}`
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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 `for<'a> extern "C" fn(&'a isize) -> isize {square}`
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note: required by a bound in `call_it_once`
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--> $DIR/unboxed-closures-wrong-abi.rs:15:20
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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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