Harfbuzz roll 3ab7b37bdebf0f8773493a1fee910b151c4de30f

third_party/harfbuzz/src/harfbuzz-gpos.c

 /*
  * Copyright (C) 1998-2004  David Turner and Werner Lemberg
  * Copyright (C) 2006  Behdad Esfahbod
  * Copyright (C) 2007  Red Hat, Inc.
  *
  * This is part of HarfBuzz, an OpenType Layout engine library.
  *
  * Permission is hereby granted, without written agreement and without
  * license or royalty fees, to use, copy, modify, and distribute this
  * software and its documentation for any purpose, provided that the
@@ skipping 5153 matching lines @@
     return error;
 
   /* Note: The coverage table in format 2 doesn't give an index into
            anything.  It just lets us know whether or not we need to
            do any lookup at all.                                     */
 
   error = _HB_OPEN_Coverage_Index( &ccpf2->Coverage, IN_CURGLYPH(), &index );
   if ( error )
     return error;
 
+  if (ccpf2->MaxInputLength < 1)
+    return HB_Err_Not_Covered;
+
   if ( ALLOC_ARRAY( backtrack_classes, ccpf2->MaxBacktrackLength, HB_UShort ) )
     return error;
   known_backtrack_classes = 0;
 
-  if (ccpf2->MaxInputLength < 1)
-    return HB_Err_Not_Covered;
-
   if ( ALLOC_ARRAY( input_classes, ccpf2->MaxInputLength, HB_UShort ) )
     goto End3;
   known_input_classes = 1;
 
   if ( ALLOC_ARRAY( lookahead_classes, ccpf2->MaxLookaheadLength, HB_UShort ) )
     goto End2;
   known_lookahead_classes = 0;
 
   error = _HB_OPEN_Get_Class( &ccpf2->InputClassDef, IN_CURGLYPH(),
                      &input_classes[0], NULL );
@@ skipping 894 matching lines @@
     {
   error = Position_CursiveChain ( buffer );
   if ( error )
     return error;
     }
 
   return retError;
 }
 
 /* END */