1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43
|
// This test ensures that the "already bound identifier in a product pattern"
// correctly accounts for or-patterns.
enum E<T> { A(T, T), B(T) }
use E::*;
fn main() {
let (a, a) = (0, 1); // Standard duplication without an or-pattern.
//~^ ERROR identifier `a` is bound more than once in the same pattern
let (a, A(a, _) | B(a)) = (0, A(1, 2));
//~^ ERROR identifier `a` is bound more than once in the same pattern
//~| ERROR identifier `a` is bound more than once in the same pattern
let (A(a, _) | B(a), a) = (A(0, 1), 2);
//~^ ERROR identifier `a` is bound more than once in the same pattern
let (A(a, a) | B(a)) = A(0, 1);
//~^ ERROR identifier `a` is bound more than once in the same pattern
let (B(a) | A(a, a)) = A(0, 1);
//~^ ERROR identifier `a` is bound more than once in the same pattern
match A(0, 1) {
B(a) | A(a, a) => {} // Let's ensure `match` has no funny business.
//~^ ERROR identifier `a` is bound more than once in the same pattern
}
let (B(A(a, _) | B(a)) | A(a, A(a, _) | B(a))) = B(B(1));
//~^ ERROR identifier `a` is bound more than once in the same pattern
//~| ERROR identifier `a` is bound more than once in the same pattern
//~| ERROR mismatched types
let (B(_) | A(A(a, _) | B(a), A(a, _) | B(a))) = B(B(1));
//~^ ERROR identifier `a` is bound more than once in the same pattern
//~| ERROR identifier `a` is bound more than once in the same pattern
//~| ERROR variable `a` is not bound in all patterns
let (B(A(a, _) | B(a)) | A(A(a, _) | B(a), A(a, _) | B(a))) = B(B(1));
//~^ ERROR identifier `a` is bound more than once in the same pattern
//~| ERROR identifier `a` is bound more than once in the same pattern
}
|