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[ft-colr] Fix cycle-detection accounting

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Fixes https://github.com/harfbuzz/harfbuzz/issues/5073
This commit is contained in:
Behdad Esfahbod 2025-02-15 21:07:47 -07:00
parent ff3aaece6d
commit 215c8de3cd
1 changed files with 3 additions and 1 deletions
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4
src/hb-ft-colr.hh
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@ -222,7 +222,9 @@ _hb_ft_paint (hb_ft_paint_context_t *c,
&paint.u.colr_layers.layer_iterator,
&other_paint))
{
unsigned i = paint.u.colr_layers.layer_iterator.layer;
// FreeType doesn't provide a way to get the layer index, so we use the pointer
// for cycle detection.
unsigned i = (unsigned) (uintptr_t) other_paint.p;
if (unlikely (c->current_layers.has (i)))
continue;