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[ft/coretext] Fail setting font-funcs gracefully

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Fixes https://github.com/harfbuzz/harfbuzz/issues/5020
This commit is contained in:
Behdad Esfahbod 2025-01-24 16:26:54 -07:00
parent 4df11621ce
commit 6be66b0ef2
2 changed files with 10 additions and 0 deletions
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5
src/hb-coretext-font.cc
View file

@ -452,7 +452,12 @@ hb_coretext_font_set_funcs (hb_font_t *font)
{
CTFontRef ct_font = hb_coretext_font_get_ct_font (font);
if (unlikely (!ct_font))
{
hb_font_set_funcs (font,
hb_font_funcs_get_empty (),
nullptr, nullptr);
return;
}
hb_font_set_funcs (font,
_hb_coretext_get_font_funcs (),

5
src/hb-ft.cc
View file

@ -1598,6 +1598,11 @@ _release_blob (void *arg)
void
hb_ft_font_set_funcs (hb_font_t *font)
{
// In case of failure...
hb_font_set_funcs (font,
hb_font_funcs_get_empty (),
nullptr, nullptr);
hb_blob_t *blob = hb_face_reference_blob (font->face);
unsigned int blob_length;
const char *blob_data = hb_blob_get_data (blob, &blob_length);