ref: ed1a8159a3f06e7c4da43567e8dee276d392f3bd dir: /include/bits/darwin/sys/stdio.h/
#define BUFSIZ 512 #define FILENAME_MAX 256 #define FOPEN_MAX 16 #define TMP_MAX 25 #define L_tmpnam 256 #define _TMPNAME "/tmp/tmp.0000000"