mirror of
https://github.com/rust-lang/rust.git
synced 2024-12-18 11:34:11 +00:00
12 lines
227 B
Rust
12 lines
227 B
Rust
|
// Check that safe fns are not a subtype of unsafe fns.
|
||
|
|
|
||
|
|
fn foo(x: Option<fn(i32)>) -> Option<unsafe fn(i32)> {
|
||
|
|
x //~ ERROR mismatched types
|
||
|
|
}
|
||
|
|
|
||
|
|
fn bar(x: fn(i32)) -> unsafe fn(i32) {
|
||
|
|
x // OK, coercion!
|
||
|
|
}
|
||
|
|
|
||
|
|
fn main() { }
|