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.
28 lines
849 B
Rust
28 lines
849 B
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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pub enum E {
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A,
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B,
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}
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pub mod b {
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pub fn key(e: ::E) -> &'static str {
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match e {
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A => "A",
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//~^ WARN pattern binding `A` is named the same as one of the variants of the type `E`
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B => "B", //~ ERROR: unreachable pattern
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//~^ WARN pattern binding `B` is named the same as one of the variants of the type `E`
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}
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}
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}
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fn main() {}
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