From 64ed03c9be0ddb0cba2674e22e8f377090ec5124 Mon Sep 17 00:00:00 2001
From: Behdad Esfahbod <behdad@behdad.org>
Date: Tue, 24 Jan 2023 18:30:49 -0700
Subject: [PATCH] [cff1] Return no name for out-of-range glyph IDs

Was returning .notdef before.
---
 src/hb-ot-cff1-table.hh | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/hb-ot-cff1-table.hh b/src/hb-ot-cff1-table.hh
index c68763fe4..8717b4a5a 100644
--- a/src/hb-ot-cff1-table.hh
+++ b/src/hb-ot-cff1-table.hh
@@ -1344,6 +1344,7 @@ struct cff1
     bool get_glyph_name (hb_codepoint_t glyph,
 			 char *buf, unsigned int buf_len) const
     {
+      if (unlikely (glyph >= num_glyphs)) return false;
       if (unlikely (!is_valid ())) return false;
       if (is_CID()) return false;
       if (unlikely (!buf_len)) return true;