ref: 4c09eaec1c1f81e175b6e8b6266e8a2c9aa7afaa dir: /lib/c/setbuf.c/
#include <stdio.h> #undef setbuf void setbuf(FILE * restrict fp, char * restrict buf) { setvbuf(fp, buf, (buf) ? _IOFBF : _IONBF, BUFSIZ); }