rust/tests/ui/parser/intersection-patterns-2.rs
2023-01-11 09:32:08 +00:00

21 lines
677 B
Rust

// This tests the parser recovery in `recover_intersection_pat`
// and serves as a regression test for the diagnostics issue #65400.
//
// The general idea is that for `$pat_lhs @ $pat_rhs` where
// `$pat_lhs` is not generated by `ref? mut? $ident` we want
// to suggest either switching the order or note that intersection
// patterns are not allowed.
fn main() {
let s: Option<u8> = None;
match s {
Some(x) @ Some(y) => {}
//~^ ERROR left-hand side of `@` must be a binding
//~| interpreted as a pattern, not a binding
//~| also a pattern
//~| NOTE bindings are `x`, `mut x`, `ref x`, and `ref mut x`
_ => {}
}
}