56 lines
1021 B
Rust
56 lines
1021 B
Rust
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// Check the if let guards don't force capture by value
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// revisions: e2018 e2021
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// check-pass
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//[e2018] edition:2018
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//[e2021] edition:2021
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#![feature(if_let_guard)]
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#![allow(irrefutable_let_patterns)]
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fn if_let_underscore(value: Box<E>) {
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|x: &E| {
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match &x {
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E::Number(_) if let _ = *value => { }
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_ => {}
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}
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};
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let x = value;
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}
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fn if_let_copy(value: Box<E>) {
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|x: &E| {
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match &x {
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E::Number(_) if let E::Number(n) = *value => { }
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_ => {}
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}
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};
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let x = value;
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}
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fn if_let_ref(value: Box<E>) {
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|x: &E| {
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match &x {
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E::Number(_) if let E::Number(ref n) = *value => { }
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_ => {}
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}
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};
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let x = value;
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}
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fn if_let_ref_mut(mut value: Box<E>) {
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|x: &E| {
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match &x {
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E::Number(_) if let E::Number(ref mut n) = *value => { }
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_ => {}
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}
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};
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let x = value;
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}
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enum E {
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String(String),
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Number(i32),
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}
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fn main() {}
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