MBCLEN_NEEDMORE_LEN 4036 ext/zlib/zlib.c 	    if ((l = gzfile_fill(gz, l + MBCLEN_NEEDMORE_LEN(n))) > 0) {
MBCLEN_NEEDMORE_LEN 3720 io.c           	    int more = MBCLEN_NEEDMORE_LEN(r);