rust/src/test/ui/issues/issue-31845.rs

// Copyright 2016 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.

// Checks lexical scopes cannot see through normal module boundries

fn f() {
    fn g() {}
    mod foo {
        fn h() {
           g(); //~ ERROR cannot find function `g` in this scope
        }
    }
}

fn main() {}