src/test/compile-fail/method-path-in-pattern.rs

// Copyright 2015 The Rust Project Developers. See the COPYRIGHT
// file at the top-level directory of this distribution and at
// http://rust-lang.org/COPYRIGHT.
//
// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
// option. This file may not be copied, modified, or distributed
// except according to those terms.

struct Foo;

impl Foo {
    fn bar(&self) {}
}

trait MyTrait {
    fn trait_bar() {}
}

impl MyTrait for Foo {}

fn main() {
    match 0u32 {
        Foo::bar => {} //~ ERROR `Foo::bar` does not name a unit variant, unit struct or a constant
    }
    match 0u32 {
        <Foo>::bar => {} //~ ERROR `bar` does not name a unit variant, unit struct or a constant
    }
    match 0u32 {
        <Foo>::trait_bar => {}
        //~^ ERROR `trait_bar` does not name a unit variant, unit struct or a constant
    }
}