1 files changed, 4 insertions, 0 deletions
diff --git a/src/3rdparty/harfbuzz-ng/src/graph/gsubgpos-graph.hh b/src/3rdparty/harfbuzz-ng/src/graph/gsubgpos-graph.hh
index 12fcbdc497..0f6d5662e0 100644
--- a/src/3rdparty/harfbuzz-ng/src/graph/gsubgpos-graph.hh
+++ b/src/3rdparty/harfbuzz-ng/src/graph/gsubgpos-graph.hh
@@ -76,6 +76,7 @@ struct Lookup : public OT::Lookup
   {
     int64_t vertex_len = vertex.obj.tail - vertex.obj.head;
     if (vertex_len < OT::Lookup::min_size) return false;
+    hb_barrier ();
     return vertex_len >= this->get_size ();
   }
 
@@ -351,6 +352,7 @@ struct LookupList : public OT::LookupList<T>
   {
     int64_t vertex_len = vertex.obj.tail - vertex.obj.head;
     if (vertex_len < OT::LookupList<T>::min_size) return false;
+    hb_barrier ();
     return vertex_len >= OT::LookupList<T>::item_size * this->len;
   }
 };
@@ -364,6 +366,7 @@ struct GSTAR : public OT::GSUBGPOS
     GSTAR* gstar = (GSTAR*) r.obj.head;
     if (!gstar || !gstar->sanitize (r))
       return nullptr;
+    hb_barrier ();
 
     return gstar;
   }
@@ -383,6 +386,7 @@ struct GSTAR : public OT::GSUBGPOS
   {
     int64_t len = vertex.obj.tail - vertex.obj.head;
     if (len < OT::GSUBGPOS::min_size) return false;
+    hb_barrier ();
     return len >= get_size ();
   }