[kerx] When rejecting variable kerning, also check for tupleCount
diff --git a/src/hb-aat-layout-kerx-table.hh b/src/hb-aat-layout-kerx-table.hh
index c683242..cd8dc45 100644
--- a/src/hb-aat-layout-kerx-table.hh
+++ b/src/hb-aat-layout-kerx-table.hh
@@ -339,7 +339,8 @@
{
bool reverse;
- if (table->u.header.coverage & (KerxTable::CrossStream | KerxTable::Variation))
+ if (table->u.header.coverage & (KerxTable::CrossStream | KerxTable::Variation) ||
+ table->u.header.tupleCount)
goto skip; /* We do NOT handle cross-stream or variation kerning. */
if (HB_DIRECTION_IS_VERTICAL (c->buffer->props.direction) !=
