ref: 72c078099ff413a22007b90784238bb294dd7dbe 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); }