rust/src/test/compile-fail/packed-struct-transmute.rs

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// 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: reinterpret_cast called on types with different size
#[packed]
struct Foo {
bar: u8,
baz: uint
}
struct Oof {
rab: u8,
zab: uint
}
fn main() {
let foo = Foo { bar: 1, baz: 10 };
unsafe {
let oof: Oof = cast::transmute(foo);
debug!(oof);
}
}