From 7c86f2e763e44b4c96cd26f1ce06225b4aba977f Mon Sep 17 00:00:00 2001
From: Behdad Esfahbod <behdad@behdad.org>
Date: Wed, 18 May 2022 11:45:27 -0600
Subject: [PATCH] [subset-cff] Pre-alloc out buffer

---
 src/hb-subset-cff-common.hh | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/hb-subset-cff-common.hh b/src/hb-subset-cff-common.hh
index fa7545b0b..638694beb 100644
--- a/src/hb-subset-cff-common.hh
+++ b/src/hb-subset-cff-common.hh
@@ -853,6 +853,7 @@ struct subr_subsetter_t
   {
     str_encoder_t  encoder (buff);
     encoder.reset ();
+    buff.alloc (str.get_count () * 3);
     /* if a prefix (CFF1 width or CFF2 vsindex) has been removed along with hints,
      * re-insert it at the beginning of charstreing */
     if (str.has_prefix () && str.is_hint_dropped ())