https://github.com/harfbuzz/harfbuzz/commit/db3aeeb547c1a2cad46ea03e162593d22f700cb4

From db3aeeb547c1a2cad46ea03e162593d22f700cb4 Mon Sep 17 00:00:00 2001
From: Behdad Esfahbod <behdad@behdad.org>
Date: Sun, 9 Jul 2023 12:32:49 -0600
Subject: [PATCH] [subset] Fix cast-align issue

Fixes https://github.com/harfbuzz/harfbuzz/issues/4316
--- a/src/hb-serialize.hh
+++ b/src/hb-serialize.hh
@@ -266,7 +266,7 @@ struct hb_serialize_context_t
 	   propagate_error (std::forward<Ts> (os)...); }
 
   /* To be called around main operation. */
-  template <typename Type>
+  template <typename Type=char>
   __attribute__((returns_nonnull))
   Type *start_serialize ()
   {
--- a/src/hb-subset.cc
+++ b/src/hb-subset.cc
@@ -273,7 +273,7 @@ _try_subset (const TableType *table,
              hb_vector_t<char>* buf,
              hb_subset_context_t* c /* OUT */)
 {
-  c->serializer->start_serialize<TableType> ();
+  c->serializer->start_serialize ();
   if (c->serializer->in_error ()) return false;
 
   bool needed = table->subset (c);