tree b87b38719ed4064d29bfe30678788e152a0a5e29
parent 11d4ce23ac55a7d881bba5214c47922c05127242
author Werner Lemberg <wl@gnu.org> 1576277785 +0100
committer Werner Lemberg <wl@gnu.org> 1576277785 +0100

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.