5804a30686
...of the type being matched.
This change will result in a better diagnostic for code like the following:
```rust
enum Enum {
Foo,
Bar
}
fn f(x: Enum) {
match x {
Foo => (),
Bar => ()
}
}
```
which would currently simply fail with an unreachable pattern error
on the 2nd arm.
The user is advised to either use a qualified path in the patterns
or import the variants explicitly into the scope.
35 lines
1.0 KiB
Rust
35 lines
1.0 KiB
Rust
// Copyright 2014 The Rust Project Developers. See the COPYRIGHT
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// file at the top-level directory of this distribution and at
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// http://rust-lang.org/COPYRIGHT.
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//
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// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
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// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
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// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
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// option. This file may not be copied, modified, or distributed
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// except according to those terms.
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enum Foo {
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Bar,
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Baz
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}
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impl Foo {
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fn foo(&self) {
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match self {
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&
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Bar if true
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//~^ WARN pattern binding `Bar` is named the same as one of the variants of the type `Foo`
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//~^^ HELP to match on a variant, consider making the path in the pattern qualified: `Foo::Bar`
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=> println!("bar"),
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&
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Baz if false
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//~^ WARN pattern binding `Baz` is named the same as one of the variants of the type `Foo`
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//~^^ HELP to match on a variant, consider making the path in the pattern qualified: `Foo::Baz`
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=> println!("baz"),
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_ => ()
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}
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}
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}
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fn main() {}
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