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[font] Protect against div-by-zero

This commit is contained in:
Behdad Esfahbod 2022-11-23 16:45:46 -07:00
parent 060ecac949
commit 5f3a780614
1 changed files with 4 additions and 3 deletions
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7
src/hb-font.cc
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@ -628,9 +628,10 @@ hb_font_get_glyph_shape_default (hb_font_t *font,
hb_font_get_glyph_shape_default_adaptor_t adaptor = {
draw_funcs,
draw_data,
(float) font->x_scale / (float) font->parent->x_scale,
(float) font->y_scale / (float) font->parent->y_scale,
(font->slant - font->parent->slant) * (float) font->x_scale / (float) font->parent->y_scale
font->parent->x_scale ? (float) font->x_scale / (float) font->parent->x_scale : 0.f,
font->parent->y_scale ? (float) font->y_scale / (float) font->parent->y_scale : 0.f,
font->parent->y_scale ? (font->slant - font->parent->slant) *
(float) font->x_scale / (float) font->parent->y_scale : 0.f
};
font->parent->get_glyph_shape (glyph,