46 lines
1.4 KiB
Rust
46 lines
1.4 KiB
Rust
// Copyright 2015 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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static mut S: *const u8 = unsafe { &S as *const *const u8 as *const u8 };
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struct StaticDoubleLinked {
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prev: &'static StaticDoubleLinked,
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next: &'static StaticDoubleLinked,
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data: i32,
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head: bool
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}
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static L1: StaticDoubleLinked = StaticDoubleLinked{prev: &L3, next: &L2, data: 1, head: true};
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static L2: StaticDoubleLinked = StaticDoubleLinked{prev: &L1, next: &L3, data: 2, head: false};
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static L3: StaticDoubleLinked = StaticDoubleLinked{prev: &L2, next: &L1, data: 3, head: false};
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pub fn main() {
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unsafe { assert_eq!(S, *(S as *const *const u8)); }
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let mut test_vec = Vec::new();
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let mut cur = &L1;
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loop {
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test_vec.push(cur.data);
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cur = cur.next;
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if cur.head { break }
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}
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assert_eq!(&test_vec, &[1,2,3]);
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let mut test_vec = Vec::new();
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let mut cur = &L1;
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loop {
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cur = cur.prev;
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test_vec.push(cur.data);
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if cur.head { break }
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}
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assert_eq!(&test_vec, &[3,2,1]);
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}
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