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223e47cc LB |
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 | ||
1a4d82fc | 11 | // Tests that `transmute` cannot be called on types of different size. |
223e47cc | 12 | |
1a4d82fc | 13 | #![allow(warnings)] |
5bcae85e | 14 | #![feature(specialization)] |
223e47cc | 15 | |
1a4d82fc | 16 | use std::mem::transmute; |
223e47cc | 17 | |
1a4d82fc JJ |
18 | unsafe fn f() { |
19 | let _: i8 = transmute(16i16); | |
041b39d2 | 20 | //~^ ERROR transmute called with types of different sizes |
223e47cc | 21 | } |
1a4d82fc JJ |
22 | |
23 | unsafe fn g<T>(x: &T) { | |
24 | let _: i8 = transmute(x); | |
041b39d2 | 25 | //~^ ERROR transmute called with types of different sizes |
1a4d82fc JJ |
26 | } |
27 | ||
5bcae85e SL |
28 | trait Specializable { type Output; } |
29 | ||
30 | impl<T> Specializable for T { | |
31 | default type Output = u16; | |
32 | } | |
33 | ||
34 | unsafe fn specializable<T>(x: u16) -> <T as Specializable>::Output { | |
35 | transmute(x) | |
041b39d2 | 36 | //~^ ERROR transmute called with types of different sizes |
5bcae85e SL |
37 | } |
38 | ||
1a4d82fc | 39 | fn main() {} |