1 // Copyright 2014-2018 The Rust Project Developers. See the COPYRIGHT
2 // file at the top-level directory of this distribution.
4 // Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
5 // http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
6 // <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
7 // option. This file may not be copied, modified, or distributed
8 // except according to those terms.
10 //! Test casts for alignment issues
12 #![feature(rustc_private)]
15 #[warn(clippy::cast_ptr_alignment)]
16 #[allow(clippy::no_effect, clippy::unnecessary_operation, clippy::cast_lossless)]
18 /* These should be warned against */
20 // cast to more-strictly-aligned type
21 (&1u8 as *const u8) as *const u16;
22 (&mut 1u8 as *mut u8) as *mut u16;
24 /* These should be okay */
28 // cast to less-strictly-aligned type
29 (&1u16 as *const u16) as *const u8;
30 (&mut 1u16 as *mut u16) as *mut u8;
31 // For c_void, we should trust the user. See #2677
32 (&1u32 as *const u32 as *const std::os::raw::c_void) as *const u32;
33 (&1u32 as *const u32 as *const libc::c_void) as *const u32;