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Check for read error when reading horizontal metrics data.

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Michael R Sweet
2025-10-06 08:42:24 -04:00
parent 1b82f141e7
commit 5edb5ad006
1 changed files with 7 additions and 1 deletions
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8
ttf.c
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@@ -1792,6 +1792,9 @@ static bool // O - `true` on success, `false` on error
read_hhea(ttf_t *font, // I - Font read_hhea(ttf_t *font, // I - Font
_ttf_off_hhea_t *hhea) // O - hhea table data _ttf_off_hhea_t *hhea) // O - hhea table data
{ {
int temp; // Temporary read value
memset(hhea, 0, sizeof(_ttf_off_hhea_t)); memset(hhea, 0, sizeof(_ttf_off_hhea_t));
if (seek_table(font, TTF_OFF_hhea, 0, true) == 0) if (seek_table(font, TTF_OFF_hhea, 0, true) == 0)
@@ -1814,7 +1817,10 @@ read_hhea(ttf_t *font, // I - Font
/* (reserved) */ read_short(font); /* (reserved) */ read_short(font);
/* (reserved) */ read_short(font); /* (reserved) */ read_short(font);
/* metricDataFormat */ read_short(font); /* metricDataFormat */ read_short(font);
hhea->numberOfHMetrics = (unsigned short)read_ushort(font); if ((temp = read_ushort(font)) < 0)
return (false);
else
hhea->numberOfHMetrics = (unsigned short)temp;
return (true); return (true);
} }