1 files changed, 37 insertions, 1 deletions
diff --git a/thirdparty/harfbuzz/src/hb-map.cc b/thirdparty/harfbuzz/src/hb-map.cc
index 6c83c670c9..089615c72a 100644
--- a/thirdparty/harfbuzz/src/hb-map.cc
+++ b/thirdparty/harfbuzz/src/hb-map.cc
@@ -40,7 +40,7 @@
 
 
 /**
- * hb_map_create: (Xconstructor)
+ * hb_map_create:
  *
  * Creates a new, initially empty map.
  *
@@ -172,6 +172,25 @@ hb_map_allocation_successful (const hb_map_t  *map)
   return map->successful;
 }
 
+/**
+ * hb_map_copy:
+ * @map: A map
+ *
+ * Allocate a copy of @map.
+ *
+ * Return value: Newly-allocated map.
+ *
+ * Since: 4.4.0
+ **/
+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);
+  return copy;
+}
 
 /**
  * hb_map_set:
@@ -309,3 +328,20 @@ hb_map_is_equal (const hb_map_t *map,
   return map->is_equal (*other);
 }
 
+/**
+ * hb_map_hash:
+ * @map: A map
+ *
+ * Creates a hash representing @map.
+ *
+ * Return value:
+ * A hash of @map.
+ *
+ * Since: 4.4.0
+ **/
+HB_EXTERN unsigned int
+hb_map_hash (const hb_map_t *map)
+{
+  return map->hash ();
+}
+