From 36c76c27c6078d9e494f27ce04b0160c906bc444 Mon Sep 17 00:00:00 2001
From: Garret Rieger <grieger@google.com>
Date: Wed, 17 Aug 2022 17:30:21 +0000
Subject: [PATCH] [repacker] when clearing links in MarkArray, also clear
 parents of the children.

---
 src/graph/markbasepos-graph.hh | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/src/graph/markbasepos-graph.hh b/src/graph/markbasepos-graph.hh
index 9326de9cd..86ed3ca6b 100644
--- a/src/graph/markbasepos-graph.hh
+++ b/src/graph/markbasepos-graph.hh
@@ -126,6 +126,8 @@ struct MarkArray : public OT::Layout::GPOS_impl::MarkArray
                unsigned new_class_count)
   {
     auto& o = c.graph.vertices_[this_index].obj;
+    for (const auto& link : o.real_links)
+      c.graph.vertices_[link.objidx].remove_parent (this_index);
     o.real_links.reset ();
 
     unsigned new_index = 0;