mikros/rust
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

make sure the raw_ptr macros also avoid UB

Browse Source
This commit is contained in:
Ralf Jung 2020-06-20 14:31:47 +02:00
parent a29f86b512
commit 03fe3772a8
1 changed files with 4 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

5
tests/run-pass/packed_struct.rs
View File

@ -1,7 +1,8 @@
#![feature(unsize, coerce_unsized, raw_ref_op)]
#![feature(unsize, coerce_unsized, raw_ref_op, raw_ref_macros)]
use std::collections::hash_map::DefaultHasher;
use std::hash::Hash;
use std::ptr;
fn test_basic() {
#[repr(packed)]
@ -45,7 +46,9 @@ fn test_basic() {
assert_eq!({x.b}, 99);
// but we *can* take a raw pointer!
assert_eq!(unsafe { (&raw const x.a).read_unaligned() }, 42);
assert_eq!(unsafe { ptr::raw_const!(x.a).read_unaligned() }, 42);
assert_eq!(unsafe { (&raw const x.b).read_unaligned() }, 99);
assert_eq!(unsafe { ptr::raw_const!(x.b).read_unaligned() }, 99);
x.b = 77;
assert_eq!({x.b}, 77);