Auto merge of rust-lang#24834 - shepmaster:default-atomic-ptr, r=alex…

…crichton Closes rust-lang#24613
alexcrichton · Apr 27, 2015 · b772ce6 · b772ce6
2 parents 5c60145 + 7c548a2
commit b772ce6
Showing 1 changed file with 6 additions and 0 deletions.
diff --git a/src/libcore/atomic.rs b/src/libcore/atomic.rs
@@ -129,6 +129,12 @@ pub struct AtomicPtr<T> {
     _marker: PhantomData<*mut T>,
 }
 
+impl<T> Default for AtomicPtr<T> {
+    fn default() -> AtomicPtr<T> {
+        AtomicPtr::new(::ptr::null_mut())
+    }
+}
+
 unsafe impl<T> Sync for AtomicPtr<T> {}
 
 /// Atomic memory orderings