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Imported Upstream version 1.9.0+dfsg1
[rustc.git] / src / test / run-pass / const-str-ptr.rs
1 // Copyright 2012 The Rust Project Developers. See the COPYRIGHT
2 // file at the top-level directory of this distribution and at
3 // http://rust-lang.org/COPYRIGHT.
4 //
5 // Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
6 // http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
7 // <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
8 // option. This file may not be copied, modified, or distributed
9 // except according to those terms.
10
11 #![feature(rustc_attrs)]
12
13 // ignore-pretty : (#23623) problems when ending with // comments
14
15 use std::{str, string};
16
17 const A: [u8; 2] = ['h' as u8, 'i' as u8];
18 const B: &'static [u8; 2] = &A;
19 const C: *const u8 = B as *const u8;
20
21 #[rustc_no_mir] // FIXME #27840 MIR can't do rvalue promotion yet.
22 pub fn main() {
23 unsafe {
24 let foo = &A as *const u8;
25 assert_eq!(foo, C);
26 assert_eq!(str::from_utf8_unchecked(&A), "hi");
27 assert_eq!(*C, A[0]);
28 assert_eq!(*(&B[0] as *const u8), A[0]);
29 }
30 }