Update library/std/src/sync/barrier.rs

Author: tisonkun

library/std/src/sync/barrier.rs

@@ -65,11 +65,9 @@ impl fmt::Debug for Barrier {
 impl Barrier {
     /// Creates a new barrier that can block a given number of threads.
     ///
-    /// A barrier will block `n`-1 threads which call [`wait()`] and then wake
+    /// A barrier will block `n-1` (saturating) threads which call [`wait()`] and then wake
     /// up all threads at once when the `n`th thread calls [`wait()`].
     ///
-    /// If `n` is 0, the barrier acts the same as `n` is 1.
-    ///
     /// [`wait()`]: Barrier::wait
     ///
     /// # Examples