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[gvar] Fix decoding of private vs shared points 

Fixes https://github.com/harfbuzz/harfbuzz/issues/3506
This commit is contained in:
Behdad Esfahbod 2022-03-25 12:56:44 -06:00
parent a02fb4a0dc
commit 3a78cf92c8
1 changed files with 3 additions and 2 deletions
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5
src/hb-ot-var-gvar-table.hh
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@ -577,10 +577,11 @@ struct gvar
hb_bytes_t bytes ((const char *) p, length);
hb_vector_t<unsigned int> private_indices;
if (iterator.current_tuple->has_private_points () &&
bool has_private_points = iterator.current_tuple->has_private_points ();
if (has_private_points &&
!GlyphVariationData::unpack_points (p, private_indices, bytes))
return false;
const hb_array_t<unsigned int> &indices = private_indices.length ? private_indices : shared_indices;
const hb_array_t<unsigned int> &indices = has_private_points ? private_indices : shared_indices;
bool apply_to_all = (indices.length == 0);
unsigned int num_deltas = apply_to_all ? points.length : indices.length;