rust/tests/ui/mir/issue-112269.rs

pub fn main() {
    const x: i32 = 4;
    let x: i32 = 3;
    //~^ ERROR refutable pattern in local binding

    const y: i32 = 3;
    let y = 4;
    //~^ ERROR refutable pattern in local binding
}
Show note for type ascription interpreted as a constant pattern, not a new variable Given the code ```rust pub fn main() { const y: i32 = 4; let y: i32 = 3; } ``` `y` in the let binding is actually interpreted as a constant pattern and is not a new variable, causing confusing diagnostics about refutable patterns in local binding. This commit extends the note for type ascription as a constant pattern to `AscribeUserType` patterns as well. 2023-06-04 12:33:33 +00:00			`pub fn main() {`
			`const x: i32 = 4;`
			`let x: i32 = 3;`
			`//~^ ERROR refutable pattern in local binding`

			`const y: i32 = 3;`
			`let y = 4;`
			`//~^ ERROR refutable pattern in local binding`
			`}`