chore: add and !Sync impls for LocalWaker as a stability guarantee.

tvallotton · tvallotton · commit 3e373f5ee7ab · 2024-01-20T10:14:25.000-03:00
diff --git a/library/core/src/task/wake.rs b/library/core/src/task/wake.rs
@@ -787,3 +787,8 @@ impl fmt::Debug for LocalWaker {
             .finish()
     }
 }
+
+#[unstable(feature = "local_waker", issue = "118959")]
+impl !Send for LocalWaker {}
+#[unstable(feature = "local_waker", issue = "118959")]
+impl !Sync for LocalWaker {}

Original file line number	Diff line number	Diff line change
`@@ -787,3 +787,8 @@ impl fmt::Debug for LocalWaker {`
`787`	`787`	`.finish()`
`788`	`788`	`}`
`789`	`789`	`}`
	`790`	`+`
	`791`	`+#[unstable(feature = "local_waker", issue = "118959")]`
	`792`	`+impl !Send for LocalWaker {}`
	`793`	`+#[unstable(feature = "local_waker", issue = "118959")]`
	`794`	`+impl !Sync for LocalWaker {}`