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[aat] Fix memfail crash

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This commit is contained in:
Behdad Esfahbod 2025-03-13 10:56:39 -06:00
parent 7b8ae3d067
commit 64240602b4
1 changed files with 3 additions and 1 deletions
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4
src/hb-aat-layout-common.hh
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@ -81,6 +81,8 @@ struct hb_aat_scratch_t
}
void destroy_buffer_glyph_set (hb_bit_set_t *s) const
{
if (unlikely (!s))
return;
if (buffer_glyph_set.cmpexch (nullptr, s))
return;
s->fini ();
@ -137,7 +139,7 @@ struct hb_aat_apply_context_t :
void setup_buffer_glyph_set ()
{
using_buffer_glyph_set = buffer->len >= 4;
using_buffer_glyph_set = buffer->len >= 4 && buffer_glyph_set;
if (using_buffer_glyph_set)
buffer->collect_codepoints (*buffer_glyph_set);