From b7f1c30c2062837932d70bd7fbd5fb69289e4f36 Mon Sep 17 00:00:00 2001
From: Behdad Esfahbod <behdad@behdad.org>
Date: Mon, 16 Jan 2023 12:07:15 -0700
Subject: [PATCH] [map] Adjust hb_map_copy()

---
 src/hb-map.cc | 9 +++++----
 1 file changed, 5 insertions(+), 4 deletions(-)

diff --git a/src/hb-map.cc b/src/hb-map.cc
index 8c027b895..b9dfa003f 100644
--- a/src/hb-map.cc
+++ b/src/hb-map.cc
@@ -174,7 +174,7 @@ hb_map_allocation_successful (const hb_map_t  *map)
  *
  * Allocate a copy of @map.
  *
- * Return value: Newly-allocated map.
+ * Return value: (transfer full): Newly-allocated map.
  *
  * Since: 4.4.0
  **/
@@ -182,9 +182,10 @@ hb_map_t *
 hb_map_copy (const hb_map_t *map)
 {
   hb_map_t *copy = hb_map_create ();
-  if (unlikely (!copy)) return nullptr;
-  copy->resize (map->population);
-  hb_copy (*map, *copy);
+  if (unlikely (copy->in_error ()))
+    return hb_map_get_empty ();
+
+  *copy = *map;
   return copy;
 }