1 files changed, 1 insertions, 0 deletions
diff --git a/src/libsyntax/ptr.rs b/src/libsyntax/ptr.rs
index c3f8a977a65..a65c54ac1e2 100644
--- a/src/libsyntax/ptr.rs
+++ b/src/libsyntax/ptr.rs
@@ -154,6 +154,7 @@ impl<T> P<[T]> {
 }
 
 impl<T> Default for P<[T]> {
+    /// Creates a new `P`, with the `Default` value for T.
     fn default() -> P<[T]> {
         P::new()
     }