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

std:🧵 add SAFETY comment

Browse Source
This commit is contained in:
Ralf Jung 2023-10-27 15:14:25 +02:00
parent 95f6a01e8f
commit ccb36a688d
1 changed files with 2 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
library/std/src/thread/mod.rs
View File

@ -546,6 +546,8 @@ impl Builder {
} }
let main = Box::new(main); let main = Box::new(main);
// SAFETY: dynamic size and alignment of the Box remain the same. See below for why the
// lifetime change is justified.
#[cfg(bootstrap)] #[cfg(bootstrap)]
let main = let main =
unsafe { mem::transmute::<Box<dyn FnOnce() + 'a>, Box<dyn FnOnce() + 'static>>(main) }; unsafe { mem::transmute::<Box<dyn FnOnce() + 'a>, Box<dyn FnOnce() + 'static>>(main) };