rust/src/test/compile-fail/packed-struct-generic-transmute.rs
2015-01-07 10:46:33 +13:00

40 lines
1.0 KiB
Rust

// Copyright 2013 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.
// This assumes the packed and non-packed structs are different sizes.
// the error points to the start of the file, not the line with the
// transmute
// error-pattern: transmute called on types with different size
#![feature(slicing_syntax)]
use std::mem;
#[repr(packed)]
struct Foo<T,S> {
bar: T,
baz: S
}
struct Oof<T, S> {
rab: T,
zab: S
}
fn main() {
let foo = Foo { bar: [1u8, 2, 3, 4, 5], baz: 10i32 };
unsafe {
let oof: Oof<[u8; 5], i32> = mem::transmute(foo);
println!("{} {}", oof.rab.index(&FullRange), oof.zab);
}
}