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
16 #[warn(clippy::cast_ptr_alignment)]
17 #[allow(clippy::no_effect, clippy::unnecessary_operation, clippy::cast_lossless)]
19 /* These should be warned against */
21 // cast to more-strictly-aligned type
22 (&1u8 as *const u8) as *const u16;
23 (&mut 1u8 as *mut u8) as *mut u16;
25 /* These should be okay */
29 // cast to less-strictly-aligned type
30 (&1u16 as *const u16) as *const u8;
31 (&mut 1u16 as *mut u16) as *mut u8;
32 // For c_void, we should trust the user. See #2677
33 (&1u32 as *const u32 as *const std::os::raw::c_void) as *const u32;
34 (&1u32 as *const u32 as *const libc::c_void) as *const u32;