| error[E0277]: expected a `Fn()` closure, found `unsafe fn() -> i32` |
| --> $DIR/fn-trait.rs:20:16 |
| | |
| LL | require_fn(f as unsafe fn() -> i32); |
| | ---------- ^^^^^^^^^^^^^^^^^^^^^^^ call the function in a closure: `|| unsafe { /* code */ }` |
| | | |
| | required by a bound introduced by this call |
| | |
| = help: the trait `Fn<()>` is not implemented for `unsafe fn() -> i32` |
| = note: unsafe function cannot be called generically without an unsafe block |
| = note: wrap the `unsafe fn() -> i32` in a closure with no arguments: `|| { /* code */ }` |
| note: required by a bound in `require_fn` |
| --> $DIR/fn-trait.rs:3:23 |
| | |
| LL | fn require_fn(_: impl Fn() -> i32) {} |
| | ^^^^^^^^^^^ required by this bound in `require_fn` |
| |
| error[E0271]: type mismatch resolving `<unsafe fn() -> i32 as FnOnce<()>>::Output == i32` |
| --> $DIR/fn-trait.rs:20:16 |
| | |
| LL | require_fn(f as unsafe fn() -> i32); |
| | ---------- ^^^^^^^^^^^^^^^^^^^^^^^ types differ |
| | | |
| | required by a bound introduced by this call |
| | |
| note: required by a bound in `require_fn` |
| --> $DIR/fn-trait.rs:3:31 |
| | |
| LL | fn require_fn(_: impl Fn() -> i32) {} |
| | ^^^ required by this bound in `require_fn` |
| |
| error[E0277]: expected a `Fn()` closure, found `extern "C" fn() -> i32 {g}` |
| --> $DIR/fn-trait.rs:23:16 |
| | |
| LL | require_fn(g); |
| | ---------- ^ expected an `Fn()` closure, found `extern "C" fn() -> i32 {g}` |
| | | |
| | required by a bound introduced by this call |
| | |
| = help: the trait `Fn<()>` is not implemented for fn item `extern "C" fn() -> i32 {g}` |
| = note: wrap the `extern "C" fn() -> i32 {g}` in a closure with no arguments: `|| { /* code */ }` |
| note: required by a bound in `require_fn` |
| --> $DIR/fn-trait.rs:3:23 |
| | |
| LL | fn require_fn(_: impl Fn() -> i32) {} |
| | ^^^^^^^^^^^ required by this bound in `require_fn` |
| |
| error[E0271]: type mismatch resolving `<extern "C" fn() -> i32 {g} as FnOnce<()>>::Output == i32` |
| --> $DIR/fn-trait.rs:23:16 |
| | |
| LL | require_fn(g); |
| | ---------- ^ types differ |
| | | |
| | required by a bound introduced by this call |
| | |
| note: required by a bound in `require_fn` |
| --> $DIR/fn-trait.rs:3:31 |
| | |
| LL | fn require_fn(_: impl Fn() -> i32) {} |
| | ^^^ required by this bound in `require_fn` |
| |
| error[E0277]: expected a `Fn()` closure, found `extern "C" fn() -> i32` |
| --> $DIR/fn-trait.rs:26:16 |
| | |
| LL | require_fn(g as extern "C" fn() -> i32); |
| | ---------- ^^^^^^^^^^^^^^^^^^^^^^^^^^^ expected an `Fn()` closure, found `extern "C" fn() -> i32` |
| | | |
| | required by a bound introduced by this call |
| | |
| = help: the trait `Fn<()>` is not implemented for `extern "C" fn() -> i32` |
| = note: wrap the `extern "C" fn() -> i32` in a closure with no arguments: `|| { /* code */ }` |
| note: required by a bound in `require_fn` |
| --> $DIR/fn-trait.rs:3:23 |
| | |
| LL | fn require_fn(_: impl Fn() -> i32) {} |
| | ^^^^^^^^^^^ required by this bound in `require_fn` |
| |
| error[E0271]: type mismatch resolving `<extern "C" fn() -> i32 as FnOnce<()>>::Output == i32` |
| --> $DIR/fn-trait.rs:26:16 |
| | |
| LL | require_fn(g as extern "C" fn() -> i32); |
| | ---------- ^^^^^^^^^^^^^^^^^^^^^^^^^^^ types differ |
| | | |
| | required by a bound introduced by this call |
| | |
| note: required by a bound in `require_fn` |
| --> $DIR/fn-trait.rs:3:31 |
| | |
| LL | fn require_fn(_: impl Fn() -> i32) {} |
| | ^^^ required by this bound in `require_fn` |
| |
| error[E0277]: expected a `Fn()` closure, found `unsafe fn() -> i32 {h}` |
| --> $DIR/fn-trait.rs:29:16 |
| | |
| LL | require_fn(h); |
| | ---------- ^ call the function in a closure: `|| unsafe { /* code */ }` |
| | | |
| | required by a bound introduced by this call |
| | |
| = help: the trait `Fn<()>` is not implemented for fn item `unsafe fn() -> i32 {h}` |
| = note: unsafe function cannot be called generically without an unsafe block |
| = note: wrap the `unsafe fn() -> i32 {h}` in a closure with no arguments: `|| { /* code */ }` |
| note: required by a bound in `require_fn` |
| --> $DIR/fn-trait.rs:3:23 |
| | |
| LL | fn require_fn(_: impl Fn() -> i32) {} |
| | ^^^^^^^^^^^ required by this bound in `require_fn` |
| |
| error[E0271]: type mismatch resolving `<unsafe fn() -> i32 {h} as FnOnce<()>>::Output == i32` |
| --> $DIR/fn-trait.rs:29:16 |
| | |
| LL | require_fn(h); |
| | ---------- ^ types differ |
| | | |
| | required by a bound introduced by this call |
| | |
| note: required by a bound in `require_fn` |
| --> $DIR/fn-trait.rs:3:31 |
| | |
| LL | fn require_fn(_: impl Fn() -> i32) {} |
| | ^^^ required by this bound in `require_fn` |
| |
| error: aborting due to 8 previous errors |
| |
| Some errors have detailed explanations: E0271, E0277. |
| For more information about an error, try `rustc --explain E0271`. |