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  • Hash : 2c9a2d58
    Author : Werner Lemberg
    Date : 2019-12-13T23:56:25

    Another bunch of UBSan warnings on adding offsets to nullptr.
    
    Reported as
    
      https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=19427
      https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=19433
      https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=19441
      https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=19451
      https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=19452
      https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=19457
    
    * src/autofit/aflatin.c (af_latin_hints_compute_segments,
    af_latin_hints_compute_edges): Use `FT_OFFSET'.
    
    * src/base/ftstream.c (FT_Stream_EnterFrame): Use `FT_OFFSET'.
    
    * src/psaux/cffdecode.c (cff_decoder_parse_charstrings): Exit early
    if there is no charstring.
    
    * src/psaux/psobjs.c (t1_decrypt): Use `FT_OFFSET'.
    
    * src/smooth/ftsmooth.c (ft_smooth_render_generic): Exit early for
    zero bitmap dimensions.
    

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