rust/src/test/run-pass/issue-41272.rs

// Copyright 2017 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(&mut self) -> bool { true }
}

fn error(foo: &mut Foo) {
    if let Some(_) = Some(true) {
    } else if foo.bar() {}
}

fn ok(foo: &mut Foo) {
    if let Some(_) = Some(true) {
    } else {
        if foo.bar() {}
    }
}

fn main() {}