Ouch.

src/hb-set-private.hh

@@ -138,7 +138,7 @@ struct hb_set_t
 
 #if 0 && HAVE_VECTOR_SIZE
     /* The vectorized version does not work with clang as non-const
-     * elt() errs /*non-const reference cannot bind to vector element". */
+     * elt() errs "non-const reference cannot bind to vector element". */
     typedef elt_t vector_t __attribute__((vector_size (PAGE_BITS / 8)));
 #else
     typedef hb_vector_size_t<elt_t, PAGE_BITS / 8> vector_t;