--> $DIR/unboxed-closures-wrong-arg-type-extern-fn.rs:21:21
|
LL | let x = call_it(&square, 22);
- | ------- ^^^^^^^ expected an `Fn<(&isize,)>` closure, found `unsafe fn(isize) -> isize {square}`
+ | ------- ^^^^^^^ call the function in a closure: `|| unsafe { /* code */ }`
| |
| required by a bound introduced by this call
|
= help: the trait `for<'r> Fn<(&'r isize,)>` is not implemented for `unsafe fn(isize) -> isize {square}`
+ = note: unsafe function cannot be called generically without an unsafe block
note: required by a bound in `call_it`
--> $DIR/unboxed-closures-wrong-arg-type-extern-fn.rs:10:15
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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);
- | ----------- ^^^^^^^^^^^ expected an `FnMut<(&isize,)>` closure, found `unsafe fn(isize) -> isize {square}`
+ | ----------- ^^^^^^^^^^^ call the function in a closure: `|| unsafe { /* code */ }`
| |
| required by a bound introduced by this call
|
= help: the trait `for<'r> FnMut<(&'r isize,)>` is not implemented for `unsafe fn(isize) -> isize {square}`
+ = note: unsafe function cannot be called generically without an unsafe block
note: required by a bound in `call_it_mut`
--> $DIR/unboxed-closures-wrong-arg-type-extern-fn.rs:13:19
|
--> $DIR/unboxed-closures-wrong-arg-type-extern-fn.rs:31:26
|
LL | let z = call_it_once(square, 22);
- | ------------ ^^^^^^ expected an `FnOnce<(&isize,)>` closure, found `unsafe fn(isize) -> isize {square}`
+ | ------------ ^^^^^^ call the function in a closure: `|| unsafe { /* code */ }`
| |
| required by a bound introduced by this call
|
= help: the trait `for<'r> FnOnce<(&'r isize,)>` is not implemented for `unsafe fn(isize) -> isize {square}`
+ = note: unsafe function cannot be called generically without an unsafe block
note: required by a bound in `call_it_once`
--> $DIR/unboxed-closures-wrong-arg-type-extern-fn.rs:16:20
|