| // Copyright 2012-2014 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. |
| |
| // ignore-pretty |
| |
| fn match_ref(v: Option<isize>) -> isize { |
| match v { |
| Some(ref i) => { |
| *i |
| } |
| None => {0} |
| } |
| } |
| |
| fn match_ref_unused(v: Option<isize>) { |
| match v { |
| Some(_) => {} |
| None => {} |
| } |
| } |
| |
| fn impure(_i: isize) { |
| } |
| |
| fn match_imm_reg(v: &Option<isize>) { |
| match *v { |
| Some(ref i) => {impure(*i)} // OK because immutable |
| None => {} |
| } |
| } |
| |
| fn match_mut_reg(v: &mut Option<isize>) { |
| match *v { |
| Some(ref i) => {impure(*i)} // OK, frozen |
| None => {} |
| } |
| } |
| |
| pub fn main() { |
| } |