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// check-pass
#![allow(unused_variables)]
fn ref_() {
let bytes: Vec<u8> = b"Hello"[..].to_vec();
let some = Some(bytes);
let Some(ref a) = Some(()) else { return };
// | ref | type annotation | & |
// | --- | --------------- | - |
// | x | x | | error
// | x | x | x | error
// | | x | | error
// | | x | x | error
// | x | | |
let Some(ref a) = some else { return }; // OK
let b: &[u8] = a;
// | x | | x |
let Some(ref a) = &some else { return }; // OK
let b: &[u8] = a;
// | | | x |
let Some(a) = &some else { return }; // OK
let b: &[u8] = a;
let Some(a): Option<&[u8]> = some.as_deref() else { return }; // OK
let b: &[u8] = a;
let Some(ref a): Option<&[u8]> = some.as_deref() else { return }; // OK
let b: &[u8] = a;
}
fn ref_mut() {
// This `ref mut` case had an ICE, see issue #89960
let Some(ref mut a) = Some(()) else { return };
let bytes: Vec<u8> = b"Hello"[..].to_vec();
let mut some = Some(bytes);
// | ref mut | type annotation | &mut |
// | ------- | --------------- | ---- |
// | x | x | | error
// | x | x | x | error
// | | x | | error
// | | x | x | error
// | x | | |
let Some(ref mut a) = some else { return }; // OK
let b: &mut [u8] = a;
// | x | | x |
let Some(ref mut a) = &mut some else { return }; // OK
let b: &mut [u8] = a;
// | | | x |
let Some(a) = &mut some else { return }; // OK
let b: &mut [u8] = a;
let Some(a): Option<&mut [u8]> = some.as_deref_mut() else { return }; // OK
let b: &mut [u8] = a;
let Some(ref mut a): Option<&mut [u8]> = some.as_deref_mut() else { return }; // OK
let b: &mut [u8] = a;
}
fn main() {
ref_();
ref_mut();
}
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