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| author | Nilstrieb <48135649+Nilstrieb@users.noreply.github.com> | 2023-01-16 18:50:45 +0100 |
|---|---|---|
| committer | Nilstrieb <48135649+Nilstrieb@users.noreply.github.com> | 2023-01-19 20:14:21 +0100 |
| commit | e1f630f23de2cbce1870e4a226fa0cb8312f106c (patch) | |
| tree | 2704e3e77821f6e29c5b65893e53acead6325c0f | |
| parent | 19423b59440f464c6cbe6be442d447e37b50fe3c (diff) | |
| download | rust-e1f630f23de2cbce1870e4a226fa0cb8312f106c.tar.gz rust-e1f630f23de2cbce1870e4a226fa0cb8312f106c.zip | |
Add `OnceCell<T>: !Sync` impl for diagnostics
| -rw-r--r-- | library/core/src/cell/once.rs | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/library/core/src/cell/once.rs b/library/core/src/cell/once.rs index 7757068a4f2..f74e563f1b9 100644 --- a/library/core/src/cell/once.rs +++ b/library/core/src/cell/once.rs @@ -298,3 +298,7 @@ impl<T> const From<T> for OnceCell<T> { OnceCell { inner: UnsafeCell::new(Some(value)) } } } + +// Just like for `Cell<T>` this isn't needed, but results in nicer error messages. +#[unstable(feature = "once_cell", issue = "74465")] +impl<T> !Sync for OnceCell<T> {} |