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Rollup merge of rust-lang#67766 - sapir:fix-unused-in-or-pattern-warn…
…ing, r=matthewjasper Fix warning for unused variables in or pattern (issue rust-lang#67691) Is this a good way to fix it? Also, the tests fail, the "fixed" code output says `{ i, j }` instead of `{ i, j: _ }`, how can I fix that?
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86 changes: 86 additions & 0 deletions
86
src/test/ui/lint/issue-67691-unused-field-in-or-pattern.rs
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,86 @@ | ||
| // FIXME: should be run-rustfix, but rustfix doesn't currently support multipart suggestions, see | ||
| // #53934 | ||
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| #![feature(or_patterns)] | ||
| #![deny(unused)] | ||
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| pub enum MyEnum { | ||
| A { i: i32, j: i32 }, | ||
| B { i: i32, j: i32 }, | ||
| } | ||
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| pub enum MixedEnum { | ||
| A { i: i32 }, | ||
| B(i32), | ||
| } | ||
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| pub fn no_ref(x: MyEnum) { | ||
| use MyEnum::*; | ||
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| match x { | ||
| A { i, j } | B { i, j } => { //~ ERROR unused variable | ||
| println!("{}", i); | ||
| } | ||
| } | ||
| } | ||
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| pub fn with_ref(x: MyEnum) { | ||
| use MyEnum::*; | ||
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| match x { | ||
| A { i, ref j } | B { i, ref j } => { //~ ERROR unused variable | ||
| println!("{}", i); | ||
| } | ||
| } | ||
| } | ||
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| pub fn inner_no_ref(x: Option<MyEnum>) { | ||
| use MyEnum::*; | ||
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| match x { | ||
| Some(A { i, j } | B { i, j }) => { //~ ERROR unused variable | ||
| println!("{}", i); | ||
| } | ||
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| _ => {} | ||
| } | ||
| } | ||
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| pub fn inner_with_ref(x: Option<MyEnum>) { | ||
| use MyEnum::*; | ||
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| match x { | ||
| Some(A { i, ref j } | B { i, ref j }) => { //~ ERROR unused variable | ||
| println!("{}", i); | ||
| } | ||
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| _ => {} | ||
| } | ||
| } | ||
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| pub fn mixed_no_ref(x: MixedEnum) { | ||
| match x { | ||
| MixedEnum::A { i } | MixedEnum::B(i) => { //~ ERROR unused variable | ||
| println!("match"); | ||
| } | ||
| } | ||
| } | ||
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| pub fn mixed_with_ref(x: MixedEnum) { | ||
| match x { | ||
| MixedEnum::A { ref i } | MixedEnum::B(ref i) => { //~ ERROR unused variable | ||
| println!("match"); | ||
| } | ||
| } | ||
| } | ||
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| pub fn main() { | ||
| no_ref(MyEnum::A { i: 1, j: 2 }); | ||
| with_ref(MyEnum::A { i: 1, j: 2 }); | ||
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| inner_no_ref(Some(MyEnum::A { i: 1, j: 2 })); | ||
| inner_with_ref(Some(MyEnum::A { i: 1, j: 2 })); | ||
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| mixed_no_ref(MixedEnum::B(5)); | ||
| mixed_with_ref(MixedEnum::B(5)); | ||
| } |
74 changes: 74 additions & 0 deletions
74
src/test/ui/lint/issue-67691-unused-field-in-or-pattern.stderr
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,74 @@ | ||
| error: unused variable: `j` | ||
| --> $DIR/issue-67691-unused-field-in-or-pattern.rs:21:16 | ||
| | | ||
| LL | A { i, j } | B { i, j } => { | ||
| | ^ ^ | ||
| | | ||
| note: the lint level is defined here | ||
| --> $DIR/issue-67691-unused-field-in-or-pattern.rs:5:9 | ||
| | | ||
| LL | #![deny(unused)] | ||
| | ^^^^^^ | ||
| = note: `#[deny(unused_variables)]` implied by `#[deny(unused)]` | ||
| help: try ignoring the field | ||
| | | ||
| LL | A { i, j: _ } | B { i, j: _ } => { | ||
| | ^^^^ ^^^^ | ||
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| error: unused variable: `j` | ||
| --> $DIR/issue-67691-unused-field-in-or-pattern.rs:31:16 | ||
| | | ||
| LL | A { i, ref j } | B { i, ref j } => { | ||
| | ^^^^^ ^^^^^ | ||
| | | ||
| help: try ignoring the field | ||
| | | ||
| LL | A { i, j: _ } | B { i, j: _ } => { | ||
| | ^^^^ ^^^^ | ||
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| error: unused variable: `j` | ||
| --> $DIR/issue-67691-unused-field-in-or-pattern.rs:41:21 | ||
| | | ||
| LL | Some(A { i, j } | B { i, j }) => { | ||
| | ^ ^ | ||
| | | ||
| help: try ignoring the field | ||
| | | ||
| LL | Some(A { i, j: _ } | B { i, j: _ }) => { | ||
| | ^^^^ ^^^^ | ||
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| error: unused variable: `j` | ||
| --> $DIR/issue-67691-unused-field-in-or-pattern.rs:53:21 | ||
| | | ||
| LL | Some(A { i, ref j } | B { i, ref j }) => { | ||
| | ^^^^^ ^^^^^ | ||
| | | ||
| help: try ignoring the field | ||
| | | ||
| LL | Some(A { i, j: _ } | B { i, j: _ }) => { | ||
| | ^^^^ ^^^^ | ||
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| error: unused variable: `i` | ||
| --> $DIR/issue-67691-unused-field-in-or-pattern.rs:63:24 | ||
| | | ||
| LL | MixedEnum::A { i } | MixedEnum::B(i) => { | ||
| | ^ ^ | ||
| | | ||
| help: try ignoring the field | ||
| | | ||
| LL | MixedEnum::A { i: _ } | MixedEnum::B(_) => { | ||
| | ^^^^ ^ | ||
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| error: unused variable: `i` | ||
| --> $DIR/issue-67691-unused-field-in-or-pattern.rs:71:24 | ||
| | | ||
| LL | MixedEnum::A { ref i } | MixedEnum::B(ref i) => { | ||
| | ^^^^^ ^^^^^ | ||
| | | ||
| help: try ignoring the field | ||
| | | ||
| LL | MixedEnum::A { i: _ } | MixedEnum::B(_) => { | ||
| | ^^^^ ^ | ||
|
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| error: aborting due to 6 previous errors | ||
|
|
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