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Esteban Küber
3f08f6759a
```
error: constant of non-structural type `partial_eq::S` in a pattern
--> $DIR/suggest_equality_comparison_instead_of_pattern_matching.rs:16:18
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LL | struct S;
| -------- `partial_eq::S` must be annotated with `#[derive(PartialEq)]` to be usable in patterns
...
LL | const C: S = S;
| ---------- constant defined here
...
LL | Some(C) => {}
| ^ constant of non-structural type
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note: the `PartialEq` trait must be derived, manual `impl`s are not sufficient; see https://doc.rust-lang.org/stable/std/marker/trait.StructuralPartialEq.html for details
--> $DIR/suggest_equality_comparison_instead_of_pattern_matching.rs:5:5
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LL | impl PartialEq<S> for S {
| ^^^^^^^^^^^^^^^^^^^^^^^
help: add a condition to the match arm checking for equality
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LL - Some(C) => {}
LL + Some(binding) if binding == C => {}
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```
23 lines
708 B
Plaintext
23 lines
708 B
Plaintext
error: constant of non-structural type `Vec<u8>` in a pattern
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--> $DIR/issue-115599.rs:5:12
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LL | const CONST_STRING: String = String::new();
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| -------------------------- constant defined here
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...
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LL | if let CONST_STRING = empty_str {}
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| ^^^^^^^^^^^^ constant of non-structural type
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--> $SRC_DIR/alloc/src/vec/mod.rs:LL:COL
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= note: `Vec<u8>` is not usable in patterns
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= note: see https://doc.rust-lang.org/stable/std/marker/trait.StructuralPartialEq.html for details
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help: check for equality instead of pattern matching
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LL - if let CONST_STRING = empty_str {}
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LL + if CONST_STRING == empty_str {}
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error: aborting due to 1 previous error
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