26 lines
805 B
Rust
26 lines
805 B
Rust
struct Foo;
|
|
fn takes_ref(_: &Foo) {}
|
|
|
|
fn main() {
|
|
let ref opt = Some(Foo);
|
|
opt.map(|arg| takes_ref(arg));
|
|
//~^ ERROR mismatched types [E0308]
|
|
opt.and_then(|arg| Some(takes_ref(arg)));
|
|
//~^ ERROR mismatched types [E0308]
|
|
let ref opt: Result<_, ()> = Ok(Foo);
|
|
opt.map(|arg| takes_ref(arg));
|
|
//~^ ERROR mismatched types [E0308]
|
|
opt.and_then(|arg| Ok(takes_ref(arg)));
|
|
//~^ ERROR mismatched types [E0308]
|
|
let x: &Option<usize> = &Some(3);
|
|
let y: Option<&usize> = x;
|
|
//~^ ERROR mismatched types [E0308]
|
|
let x: &Result<usize, usize> = &Ok(3);
|
|
let y: Result<&usize, &usize> = x;
|
|
//~^ ERROR mismatched types [E0308]
|
|
// note: do not suggest because of `E: usize`
|
|
let x: &Result<usize, usize> = &Ok(3);
|
|
let y: Result<&usize, usize> = x;
|
|
//~^ ERROR mismatched types [E0308]
|
|
}
|