26 lines
869 B
Rust
26 lines
869 B
Rust
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// Copyright 2013 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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// Test that freezing an `&mut` pointer while referent is
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// frozen is legal.
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//
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// Example from src/middle/borrowck/doc.rs
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fn foo<'a>(mut t0: &'a mut int,
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mut t1: &'a mut int) {
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let p: &int = &*t0; // Freezes `*t0`
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let mut t2 = &t0;
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let q: &int = &**t2; // Freezes `*t0`, but that's ok...
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let r: &int = &*t0; // ...after all, could do same thing directly.
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}
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fn main() {
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}
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