ref: 2bee5e38261775e54c94508a6955f0bbfa28e51c 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"