112 lines
2.5 KiB
Rust
112 lines
2.5 KiB
Rust
#![feature(exclusive_range_pattern)]
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#![warn(clippy::all)]
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#![allow(unused, clippy::redundant_pattern_matching, clippy::too_many_lines)]
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#![warn(clippy::match_same_arms)]
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fn dummy() {}
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fn match_wild_err_arm() {
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let x: Result<i32, &str> = Ok(3);
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match x {
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Ok(3) => println!("ok"),
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Ok(_) => println!("ok"),
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Err(_) => panic!("err"),
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}
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match x {
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Ok(3) => println!("ok"),
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Ok(_) => println!("ok"),
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Err(_) => panic!(),
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}
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match x {
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Ok(3) => println!("ok"),
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Ok(_) => println!("ok"),
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Err(_) => {
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panic!();
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},
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}
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match x {
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Ok(3) => println!("ok"),
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Ok(_) => println!("ok"),
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Err(_e) => panic!(),
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}
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// Allowed when used in `panic!`.
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match x {
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Ok(3) => println!("ok"),
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Ok(_) => println!("ok"),
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Err(_e) => panic!("{}", _e),
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}
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// Allowed when not with `panic!` block.
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match x {
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Ok(3) => println!("ok"),
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Ok(_) => println!("ok"),
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Err(_) => println!("err"),
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}
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// Allowed when used with `unreachable!`.
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match x {
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Ok(3) => println!("ok"),
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Ok(_) => println!("ok"),
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Err(_) => unreachable!(),
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}
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match x {
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Ok(3) => println!("ok"),
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Ok(_) => println!("ok"),
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Err(_) => unreachable!(),
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}
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match x {
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Ok(3) => println!("ok"),
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Ok(_) => println!("ok"),
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Err(_) => {
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unreachable!();
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},
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}
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// No warning because of the guard.
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match x {
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Ok(x) if x * x == 64 => println!("ok"),
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Ok(_) => println!("ok"),
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Err(_) => println!("err"),
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}
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// This used to be a false positive; see issue #1996.
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match x {
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Ok(3) => println!("ok"),
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Ok(x) if x * x == 64 => println!("ok 64"),
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Ok(_) => println!("ok"),
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Err(_) => println!("err"),
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}
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match (x, Some(1i32)) {
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(Ok(x), Some(_)) => println!("ok {}", x),
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(Ok(_), Some(x)) => println!("ok {}", x),
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_ => println!("err"),
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}
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// No warning; different types for `x`.
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match (x, Some(1.0f64)) {
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(Ok(x), Some(_)) => println!("ok {}", x),
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(Ok(_), Some(x)) => println!("ok {}", x),
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_ => println!("err"),
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}
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// Because of a bug, no warning was generated for this case before #2251.
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match x {
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Ok(_tmp) => println!("ok"),
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Ok(3) => println!("ok"),
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Ok(_) => println!("ok"),
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Err(_) => {
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unreachable!();
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},
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}
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}
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fn main() {}
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