#include <stdio.h>
#include <string.h>
int
main (void)
{
char *bp;
size_t size;
FILE *stream;
int lose = 0;
stream = open_memstream (&bp, &size);
fprintf (stream, "hello");
fflush (stream);
printf ("buf = %s, size = %Zu\n", bp, size);
lose |= size != 5;
lose |= strncmp (bp, "hello", size);
fprintf (stream, ", world");
fclose (stream);
lose |= size != 12;
lose |= strncmp (bp, "hello, world", 12);
puts (lose ? "Test FAILED!" : "Test succeeded.");
return lose;
}