GB18030. */
# if defined __sun && !defined _LIBICONV_VERSION
if ( STREQ (encoding, "GB2312", 'G', 'B', '2', '3', '1', '2', 0, 0, 0)
GB18030. */
# if defined __sun && !defined _LIBICONV_VERSION
if ( STREQ (encoding, "GB2312", 'G', 'B', '2', '3', '1', '2', 0, 0, 0)