From 73b8360dcfb57eaa9acffc7967015a113421eeda Mon Sep 17 00:00:00 2001
From: Garret Rieger <grieger@google.com>
Date: Thu, 19 May 2022 22:59:51 +0000
Subject: [PATCH] [subset] fix fuzzer found underflow when heap push fails.

Fixes https://oss-fuzz.com/testcase-detail/5148625505746944.
---
 src/hb-priority-queue.hh | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/hb-priority-queue.hh b/src/hb-priority-queue.hh
index 1168247d0..ffb86e30a 100644
--- a/src/hb-priority-queue.hh
+++ b/src/hb-priority-queue.hh
@@ -51,6 +51,7 @@ struct hb_priority_queue_t
   void insert (int64_t priority, unsigned value)
   {
     heap.push (item_t (priority, value));
+    if (unlikely (heap.in_error ())) return;
     bubble_up (heap.length - 1);
   }