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[subset] fix nullptr deref.

This commit is contained in:
Garret Rieger 2021-03-29 16:08:44 -07:00
parent 9a3537e5f6
commit c6adb90a27
1 changed files with 12 additions and 10 deletions
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4
src/hb-ot-layout-gsubgpos.hh
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@ -107,10 +107,12 @@ struct hb_closure_context_t :
done_lookups_glyph_count->set (lookup_index, glyphs->get_population ()); done_lookups_glyph_count->set (lookup_index, glyphs->get_population ());
if (!done_lookups_glyph_set->get (lookup_index)) if (!done_lookups_glyph_set->get (lookup_index))
{
done_lookups_glyph_set->set (lookup_index, hb_set_create ()); done_lookups_glyph_set->set (lookup_index, hb_set_create ());
} else {
done_lookups_glyph_set->get (lookup_index)->clear (); done_lookups_glyph_set->get (lookup_index)->clear ();
} }
}
hb_set_t *covered_glyph_set = done_lookups_glyph_set->get (lookup_index); hb_set_t *covered_glyph_set = done_lookups_glyph_set->get (lookup_index);
if (parent_active_glyphs ()->is_subset (covered_glyph_set)) if (parent_active_glyphs ()->is_subset (covered_glyph_set))