From e77302c61f1f1620d1f438a997575fa6ee5c172e Mon Sep 17 00:00:00 2001
From: Behdad Esfahbod <behdad@behdad.org>
Date: Thu, 22 Apr 2010 13:34:00 -0400
Subject: [PATCH] Add comment

---
 src/hb-ot-layout-common-private.hh | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/src/hb-ot-layout-common-private.hh b/src/hb-ot-layout-common-private.hh
index 81e4dc911..9c3de50f9 100644
--- a/src/hb-ot-layout-common-private.hh
+++ b/src/hb-ot-layout-common-private.hh
@@ -295,7 +295,9 @@ struct Lookup
 
   inline bool sanitize (SANITIZE_ARG_DEF) {
     TRACE_SANITIZE ();
-    if (!(SANITIZE_SELF () && HB_LIKELY ((subTable).sanitize_shallow (SANITIZE_ARG)))) return false;
+    /* We sanitize subtables shallow here since we don't have their actual
+     * type.  Real sanitize of the referenced data is done by GSUB/GPOS/... */
+    if (!(SANITIZE_SELF () && HB_LIKELY (subTable.sanitize_shallow (SANITIZE_ARG)))) return false;
     if (HB_UNLIKELY (lookupFlag & LookupFlag::UseMarkFilteringSet))
     {
       USHORT &markFilteringSet = StructAfter<USHORT> (subTable);