[kern] Don't enforce length of last subtable
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@ -936,7 +936,11 @@ struct KerxTable
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if (reverse)
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c->buffer->reverse ();
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c->sanitizer.set_object (*st);
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/* See comment in sanitize() for conditional here. */
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if (i < count - 1)
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c->sanitizer.set_object (*st);
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else
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c->sanitizer.reset_object ();
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ret |= st->dispatch (c);
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@ -968,7 +972,18 @@ struct KerxTable
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unsigned int count = thiz()->tableCount;
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for (unsigned int i = 0; i < count; i++)
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{
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c->set_object (*st);
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/* OpenType kern table has 2-byte subtable lengths. That's limiting.
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* MS implementation also only supports one subtable, of format 0,
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* anyway. Certain versions of some fonts, like Calibry, contain
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* kern subtable that exceeds 64kb. Looks like, the subtable length
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* is simply ignored. Which makes sense. It's only needed if you
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* have multiple subtables. To handle such fonts, we just ignore
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* the length for the last subtable. */
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if (i < count - 1)
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c->set_object (*st);
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else
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c->reset_object ();
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if (unlikely (!st->sanitize (c)))
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return_trace (false);
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st = &StructAfter<SubTable> (*st);
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