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[metrics] Harden math

This commit is contained in:
Behdad Esfahbod 2022-01-02 10:55:11 -07:00
parent fa008a021f
commit 45c2b6e384
1 changed files with 1 additions and 1 deletions
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2
src/hb-ot-metrics.cc
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@ -166,7 +166,7 @@ hb_ot_metrics_get_position (hb_font_t *font,
{
unsigned rise = face->table.hhea->caretSlopeRise;
unsigned upem = face->get_upem ();
unsigned mult = rise < upem ? upem / rise : 1;
unsigned mult = (rise && rise < upem) ? hb_min (upem / rise, 256u) : 1u;
if (metrics_tag == HB_OT_METRICS_TAG_HORIZONTAL_CARET_RISE)
return mult * GET_METRIC_Y (hhea, caretSlopeRise);