ref: 3c6c5a02710e4d7a3da6121e9bfb8d2bc0d786dd dir: /src/libc/stdio/setbuf.c/
#include <stdio.h> #undef setbuf void setbuf(FILE *restrict fp, char *restrict buf) { setvbuf(fp, buf, (buf) ? _IOFBF : _IONBF, BUFSIZ); }