rust/src/test/ui/or-patterns/inconsistent-modes.rs

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// This test ensures that or patterns require binding mode consistency across arms.
#![feature(or_patterns)]
#![allow(incomplete_features, non_camel_case_types)]
fn main() {
// One level:
let Ok(a) | Err(ref a): Result<&u8, u8> = Ok(&0);
//~^ ERROR variable `a` is bound in inconsistent ways
let Ok(ref mut a) | Err(a): Result<u8, &mut u8> = Ok(0);
//~^ ERROR variable `a` is bound in inconsistent ways
let Ok(ref a) | Err(ref mut a): Result<&u8, &mut u8> = Ok(&0);
//~^ ERROR variable `a` is bound in inconsistent ways
//~| ERROR mismatched types
let Ok((ref a, b)) | Err((ref mut a, ref b)) = Ok((0, &0));
//~^ ERROR variable `a` is bound in inconsistent ways
//~| ERROR variable `b` is bound in inconsistent ways
//~| ERROR mismatched types
// Two levels:
let Ok(Ok(a) | Err(a)) | Err(ref a) = Err(0);
//~^ ERROR variable `a` is bound in inconsistent ways
// Three levels:
let Ok([ Ok((Ok(ref a) | Err(a),)) | Err(a) ]) | Err(a) = Err(&1);
//~^ ERROR variable `a` is bound in inconsistent ways
}