45 lines
1.2 KiB
Rust
45 lines
1.2 KiB
Rust
// Copyright 2012 The Rust Project Developers. See the COPYRIGHT
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// file at the top-level directory of this distribution and at
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// http://rust-lang.org/COPYRIGHT.
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//
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// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
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// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
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// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
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// option. This file may not be copied, modified, or distributed
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// except according to those terms.
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fn process<T>(_t: T) {}
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fn match_const_opt_by_mut_ref(v: &const Option<int>) {
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match *v {
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Some(ref mut i) => process(i), //~ ERROR illegal borrow
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None => ()
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}
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}
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fn match_const_opt_by_const_ref(v: &const Option<int>) {
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match *v {
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Some(ref const i) => process(i), //~ ERROR illegal borrow unless pure
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//~^ NOTE impure due to
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None => ()
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}
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}
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fn match_const_opt_by_imm_ref(v: &const Option<int>) {
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match *v {
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Some(ref i) => process(i), //~ ERROR illegal borrow unless pure
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//~^ NOTE impure due to
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None => ()
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}
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}
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fn match_const_opt_by_value(v: &const Option<int>) {
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match *v {
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Some(copy i) => process(i),
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None => ()
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}
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}
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fn main() {
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}
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