1 files changed, 13 insertions, 0 deletions
diff --git a/libartbase/base/array_ref.h b/libartbase/base/array_ref.h
index e8b3bceb71..064e26bc5f 100644
--- a/libartbase/base/array_ref.h
+++ b/libartbase/base/array_ref.h
@@ -203,6 +203,19 @@ bool operator!=(const ArrayRef<T>& lhs, const ArrayRef<T>& rhs) {
   return !(lhs == rhs);
 }
 
+template<typename T>
+std::ostream& operator<<(std::ostream& os, const ArrayRef<T>& ts) {
+  bool first = true;
+  os << "[";
+  for (const T& t : ts) {
+    if (!first) { os << ", "; }
+    first = false;
+    os << t;
+  }
+  os << "]";
+  return os;
+}
+
 }  // namespace art