139 	const unsigned int w_len = LENGTH_OF(w_c);  in main()  local
141 	const void *w = tail_memdup(w_c, w_len);  in main()
145 	const unsigned int r0_len = (w_len + 1) / 2;  in main()
150 	const unsigned int r1_len = w_len - r0_len;  in main()
151 	void *r1 = tail_alloc(w_len);  in main()
174 	rc = pwrite(1, w, w_len, 0);  in main()
175 	if (rc != (int) w_len)  in main()
177 				    w_len, rc);  in main()
180 		w_c, w_len, rc, w_d, w_c);  in main()
206 	rc = pread(0, r1, w_len, r0_len);  in main()
212 		r1_c, w_len, r0_len, rc, r1_d, r1_c);  in main()