#![warn(clippy::match_same_arms)] pub enum Abc { A, B, C, } fn match_same_arms() { let _ = match Abc::A { Abc::A => 0, Abc::B => 1, _ => 0, //~ ERROR match arms have same body }; match (1, 2, 3) { (1, .., 3) => 42, (.., 3) => 42, //~ ERROR match arms have same body _ => 0, }; let _ = match 42 { 42 => 1, 51 => 1, //~ ERROR match arms have same body 41 => 2, 52 => 2, //~ ERROR match arms have same body _ => 0, }; let _ = match 42 { 1 => 2, 2 => 2, //~ ERROR 2nd matched arms have same body 3 => 2, //~ ERROR 3rd matched arms have same body 4 => 3, _ => 0, }; } mod issue4244 { #[derive(PartialEq, PartialOrd, Eq, Ord)] pub enum CommandInfo { BuiltIn { name: String, about: Option }, External { name: String, path: std::path::PathBuf }, } impl CommandInfo { pub fn name(&self) -> String { match self { CommandInfo::BuiltIn { name, .. } => name.to_string(), CommandInfo::External { name, .. } => name.to_string(), } } } } macro_rules! m { (foo) => {}; (bar) => {}; } macro_rules! foo { () => { 1 }; } macro_rules! bar { () => { 1 }; } fn main() { let x = 0; let _ = match 0 { 0 => { m!(foo); x }, 1 => { m!(bar); x }, _ => 1, }; let _ = match 0 { 0 => { m!(foo); 0 }, 1 => { m!(bar); 0 }, _ => 1, }; let _ = match 0 { 0 => { let mut x = 0; #[cfg(not_enabled)] { x = 5; } #[cfg(not(not_enabled))] { x = 6; } x }, 1 => { let mut x = 0; #[cfg(also_not_enabled)] { x = 5; } #[cfg(not(also_not_enabled))] { x = 6; } x }, _ => 0, }; let _ = match 0 { 0 => foo!(), 1 => bar!(), _ => 1, }; let _ = match 0 { 0 => cfg!(not_enabled), 1 => cfg!(also_not_enabled), _ => false, }; }