152     retval = mbtowc(&wchar, first[0], MAX_BYTES);  in main()
160       retval = mbtowc (&wchar, first[i-1], MAX_BYTES);  in main()
170       retval = mbtowc (&wchar, last[i-1], MAX_BYTES);  in main()
180         retval = mbtowc (&wchar, boundary[i-1], MAX_BYTES);  in main()
189     retval = mbtowc (&wchar, continuation_bytes[0], MAX_BYTES);  in main()
195     retval = mbtowc (&wchar, continuation_bytes[1], MAX_BYTES);  in main()
268         retval = mbtowc(&wchar, incomplete_seq[i-1], i);  in main()
277         retval = mbtowc(&wchar, incomplete_seq[i-1], i - 5);  in main()
289     retval = mbtowc(&wchar, impossible_bytes[0], 1);  in main()
295     retval = mbtowc(&wchar, impossible_bytes[1], 1);  in main()
301     retval = mbtowc(&wchar, impossible_bytes[2], 4);  in main()
311         retval = mbtowc(&wchar, overlong[i-2], i);  in main()
321         retval = mbtowc(&wchar, overlong_max[i-2], i);  in main()
331         retval = mbtowc(&wchar, overlong_nul[i-2], i);  in main()
342         retval = mbtowc(&wchar, single_surrogates[i-1], 3);  in main()
352         retval = mbtowc(&wchar, paired_surrogates[i-1], 6);  in main()
360     retval = mbtowc(&wchar, illegal_pos[0], 3);  in main()
366     retval = mbtowc(&wchar, illegal_pos[1], 3);  in main()
390       retval = mbtowc (&wchar, t, len - i);  in num_invalid()