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