// fgets must not modify the buffer on eof

#include <stdio.h>

#include <stdlib.h>

#include <string.h>

#include "test.h"

#define ASSERT(c) do { if (!(c)) t_error("%s failed\n", #c); } while(0)

int main(void)

{

	char buf[] = "test";

	char s[10];

	FILE *f;

	ASSERT((f = fmemopen(buf, sizeof buf, "r")) != 0);

	ASSERT(fgets(s, sizeof s, f) == s);

	ASSERT(strcmp(s, buf) == 0);

	ASSERT(fgets(s, sizeof s, f) == 0);

	if (s[0] != 't')

		t_error("fgets modified the buffer after eof\n");

	return t_status;

}