rust-lang/rust
1
0
Fork 0
Code Issues Pull Requests Actions 1 Packages Projects Releases Wiki Activity

clarify correctness of black_box

Browse Source
This commit is contained in:
Callum Leslie
2023-02-15 16:22:08 +00:00
parent 999ac5f777
commit 29621ba288
1 changed files with 2 additions and 1 deletions
Download Patch File Download Diff File Expand all files Collapse all files

3
library/core/src/hint.rs
View File

@@ -216,7 +216,8 @@ pub fn spin_loop() {
/// ///
/// Note however, that `black_box` is only (and can only be) provided on a "best-effort" basis. The /// Note however, that `black_box` is only (and can only be) provided on a "best-effort" basis. The
/// extent to which it can block optimisations may vary depending upon the platform and code-gen /// extent to which it can block optimisations may vary depending upon the platform and code-gen
/// backend used. Programs cannot rely on `black_box` for *correctness* in any way. /// backend used. Programs cannot rely on `black_box` for *correctness*, beyond it behaving as the
/// identity function.
/// ///
/// [`std::convert::identity`]: crate::convert::identity /// [`std::convert::identity`]: crate::convert::identity
/// ///