Commit
This commit does not belong to any branch on this repository, and may belong to a fork outside of the repository.
Fix
range_covered_by_constructor
for exclusive ranges.
This resolves #43253
- Loading branch information
Showing
3 changed files
with
75 additions
and
4 deletions.
There are no files selected for viewing
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
Original file line number | Diff line number | Diff line change |
---|---|---|
@@ -0,0 +1,51 @@ | ||
// Copyright 2017 The Rust Project Developers. See the COPYRIGHT | ||
// file at the top-level directory of this distribution and at | ||
// http://rust-lang.org/COPYRIGHT. | ||
// | ||
// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or | ||
// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license | ||
// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your | ||
// option. This file may not be copied, modified, or distributed | ||
// except according to those terms. | ||
|
||
#![feature(exclusive_range_pattern)] | ||
|
||
fn main() { | ||
// These cases should generate no warning. | ||
match 10 { | ||
1..10 => {}, | ||
10 => {}, | ||
_ => {}, | ||
} | ||
|
||
match 10 { | ||
1..10 => {}, | ||
9...10 => {}, | ||
_ => {}, | ||
} | ||
|
||
match 10 { | ||
1..10 => {}, | ||
10...10 => {}, | ||
_ => {}, | ||
} | ||
|
||
// These cases should generate an "unreachable pattern" warning. | ||
match 10 { | ||
1..10 => {}, | ||
9 => {}, | ||
_ => {}, | ||
} | ||
|
||
match 10 { | ||
1..10 => {}, | ||
8...9 => {}, | ||
_ => {}, | ||
} | ||
|
||
match 10 { | ||
1..10 => {}, | ||
9...9 => {}, | ||
_ => {}, | ||
} | ||
} |
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
Original file line number | Diff line number | Diff line change |
---|---|---|
@@ -0,0 +1,20 @@ | ||
warning: unreachable pattern | ||
--> $DIR/issue-43253.rs:36:9 | ||
| | ||
36 | 9 => {}, | ||
| ^ | ||
| | ||
= note: #[warn(unreachable_patterns)] on by default | ||
|
||
warning: unreachable pattern | ||
--> $DIR/issue-43253.rs:42:9 | ||
| | ||
42 | 8...9 => {}, | ||
| ^^^^^ | ||
|
||
warning: unreachable pattern | ||
--> $DIR/issue-43253.rs:48:9 | ||
| | ||
48 | 9...9 => {}, | ||
| ^^^^^ | ||
|