1 files changed, 6 insertions, 0 deletions
diff --git a/src/libsyntax/util/small_vector.rs b/src/libsyntax/util/small_vector.rs
index 893646f121f..373dfc4ddfa 100644
--- a/src/libsyntax/util/small_vector.rs
+++ b/src/libsyntax/util/small_vector.rs
@@ -29,6 +29,12 @@ enum SmallVectorRepr<T> {
     Many(Vec<T>),
 }
 
+impl<T> Default for SmallVector<T> {
+    fn default() -> Self {
+        SmallVector { repr: Zero }
+    }
+}
+
 impl<T> Into<Vec<T>> for SmallVector<T> {
     fn into(self) -> Vec<T> {
         match self.repr {