From 9308659fd76bb400da2c869ca2f945760adfaf56 Mon Sep 17 00:00:00 2001
From: Behdad Esfahbod <behdad@behdad.org>
Date: Wed, 18 May 2022 16:14:25 -0600
Subject: [PATCH] [priority-queue] Optimize swap()

---
 src/hb-priority-queue.hh | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/src/hb-priority-queue.hh b/src/hb-priority-queue.hh
index 7d799ae90..9c02eb423 100644
--- a/src/hb-priority-queue.hh
+++ b/src/hb-priority-queue.hh
@@ -142,9 +142,9 @@ struct hb_priority_queue_t
 
   void swap (unsigned a, unsigned b)
   {
-    item_t temp = heap[a];
-    heap[a] = heap[b];
-    heap[b] = temp;
+    assert (a <= heap.length);
+    assert (b <= heap.length);
+    hb_swap (heap.arrayZ[a], heap.arrayZ[b]);
   }
 };