stdin.c\stdio\src - musl - musl - an implementation of the standard library for Linux-based systems

#include "stdio_impl.h"
static unsigned char buf[BUFSIZ+UNGET];
static FILE f = {
	.buf = buf+UNGET,
	.buf_size = sizeof buf-UNGET,
	.fd = 0,
	.flags = F_PERM | F_NOWR,
	.read = __stdio_read,
	.seek = __stdio_seek,
	.close = __stdio_close,
};
FILE *const stdin = &f;