// commit 3af2edee150484940916eba1984f78c3b965dd05 2014-02-07

// fix ftello result for append streams with unflushed output

#include <errno.h>

#include <fcntl.h>

#include <stdio.h>

#include <stdlib.h>

#include <string.h>

#include <unistd.h>

#include "test.h"

#define ASSERT(c) do { \

	errno = 0; \

	if (!(c)) \

		t_error("%s failed (errno: %s)\n", #c, strerror(errno)); \

} while(0)

int main(void)

{

	char tmp[] = "/tmp/testsuite-XXXXXX";

	int fd;

	FILE *f;

	off_t off;

	ASSERT((fd = mkstemp(tmp)) > 2);

	ASSERT(write(fd, "abcd", 4) == 4);

	ASSERT(close(fd) == 0);

	ASSERT((fd = open(tmp, O_WRONLY)) > 2);

	ASSERT(f = fdopen(fd, "a"));

	if (f) {

		ASSERT(fwrite("efg", 1, 3, f) == 3);

		ASSERT((off = ftello(f)) != -1);

		if (off != 7)

			t_error("ftello is broken before flush: got %lld, want 7\n", (long long)off);

		ASSERT(fflush(f) == 0);

		ASSERT((off = ftello(f)) != -1);

		if (off != 7)

			t_error("ftello is broken after flush: got %lld, want 7\n", (long long)off);

		ASSERT(fclose(f) == 0);

	}

	if (fd > 2)

		ASSERT(unlink(tmp) == 0);

	return t_status;

}