From 0cd98ebbf78cf7ba5e7a43b1a864b23e5e0189ca Mon Sep 17 00:00:00 2001
From: Behdad Esfahbod <behdad@behdad.org>
Date: Tue, 25 Feb 2025 18:53:04 -0700
Subject: [PATCH] [vector] Add a missing fast-path

---
 src/hb-vector.hh | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/src/hb-vector.hh b/src/hb-vector.hh
index 809f2d842..5eb02bc8e 100644
--- a/src/hb-vector.hh
+++ b/src/hb-vector.hh
@@ -341,6 +341,15 @@ struct hb_vector_t
     length = size;
   }
 
+  template <typename T = Type,
+	    hb_enable_if (hb_is_trivially_copyable (T))>
+  void
+  copy_array (hb_array_t<Type> other)
+  {
+    assert ((int) (length + other.length) <= allocated);
+    hb_memcpy ((void *) (arrayZ + length), (const void *) other.arrayZ, other.length * item_size);
+    length += other.length;
+  }
   template <typename T = Type,
 	    hb_enable_if (hb_is_trivially_copyable (T))>
   void