Update `IsZero` documentation

[rust.git] / library / alloc / src / rc.rs

diff --git a/library/alloc/src/rc.rs b/library/alloc/src/rc.rs
index 80a5913daa6e032720e832141d4105c6d8311106..c9aa23fc4af1f275e98ff6352e4e34480d6044cb 100644 (file)
--- a/library/alloc/src/rc.rs
+++ b/library/alloc/src/rc.rs
@@ -2179,7 +2179,7 @@ pub struct Weak<T: ?Sized> {
     // This is a `NonNull` to allow optimizing the size of this type in enums,
     // but it is not necessarily a valid pointer.
     // `Weak::new` sets this to `usize::MAX` so that it doesn’t need
-    // to allocate space on the heap.  That's not a value a real pointer
+    // to allocate space on the heap. That's not a value a real pointer
     // will ever have because RcBox has alignment at least 2.
     // This is only possible when `T: Sized`; unsized `T` never dangle.
     ptr: NonNull<RcBox<T>>,
@@ -2561,7 +2561,7 @@ fn clone(&self) -> Weak<T> {
 }
 
 #[stable(feature = "rc_weak", since = "1.4.0")]
-impl<T: ?Sized + fmt::Debug> fmt::Debug for Weak<T> {
+impl<T: ?Sized> fmt::Debug for Weak<T> {
     fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
         write!(f, "(Weak)")
     }