rust/tests/ui/match/issue-41255.rs
2023-01-11 09:32:08 +00:00

51 lines
2.0 KiB
Rust

// Matching against float literals should result in a linter error
#![feature(exclusive_range_pattern)]
#![allow(unused)]
#![forbid(illegal_floating_point_literal_pattern)]
fn main() {
let x = 42.0;
match x {
5.0 => {}, //~ ERROR floating-point types cannot be used in patterns
//~| WARNING hard error
5.0f32 => {}, //~ ERROR floating-point types cannot be used in patterns
//~| WARNING hard error
-5.0 => {}, //~ ERROR floating-point types cannot be used in patterns
//~| WARNING hard error
1.0 .. 33.0 => {}, //~ ERROR floating-point types cannot be used in patterns
//~| WARNING hard error
//~| ERROR floating-point types cannot be used in patterns
//~| WARNING hard error
39.0 ..= 70.0 => {}, //~ ERROR floating-point types cannot be used in patterns
//~| ERROR floating-point types cannot be used in patterns
//~| WARNING hard error
//~| WARNING hard error
..71.0 => {}
//~^ ERROR floating-point types cannot be used in patterns
//~| WARNING this was previously accepted by the compiler
..=72.0 => {}
//~^ ERROR floating-point types cannot be used in patterns
//~| WARNING this was previously accepted by the compiler
71.0.. => {}
//~^ ERROR floating-point types cannot be used in patterns
//~| WARNING this was previously accepted by the compiler
_ => {},
};
let y = 5.0;
// Same for tuples
match (x, 5) {
(3.14, 1) => {}, //~ ERROR floating-point types cannot be used
//~| WARNING hard error
_ => {},
}
// Or structs
struct Foo { x: f32 };
match (Foo { x }) {
Foo { x: 2.0 } => {}, //~ ERROR floating-point types cannot be used
//~| WARNING hard error
_ => {},
}
}