--- old/src/java.desktop/share/native/libfreetype/src/sfnt/ttload.c	2020-08-20 13:34:04.188209237 -0700
+++ new/src/java.desktop/share/native/libfreetype/src/sfnt/ttload.c	2020-08-20 13:34:03.952209241 -0700
@@ -5,7 +5,7 @@
  *   Load the basic TrueType tables, i.e., tables that can be either in
  *   TTF or OTF fonts (body).
  *
- * Copyright (C) 1996-2019 by
+ * Copyright (C) 1996-2020 by
  * David Turner, Robert Wilhelm, and Werner Lemberg.
  *
  * This file is part of the FreeType project, and may only be used,
@@ -397,7 +397,15 @@
       }
     }
     else
+    {
       valid_entries = sfnt.num_tables;
+      if ( !valid_entries )
+      {
+        FT_TRACE2(( "tt_face_load_font_dir: no valid tables found\n" ));
+        error = FT_THROW( Unknown_File_Format );
+        goto Exit;
+      }
+    }
 
     face->num_tables = valid_entries;
     face->format_tag = sfnt.format_tag;
@@ -916,7 +924,7 @@
       /* load language tags */
       {
         TT_LangTag  entry = table->langTags;
-        TT_LangTag  limit = entry + table->numLangTagRecords;
+        TT_LangTag  limit = FT_OFFSET( entry, table->numLangTagRecords );
 
 
         for ( ; entry < limit; entry++ )