D newb

[Tim H]

Hi, I am a D newbie.  Why does this program segfault?

import std.stdio;
import std.c.stdlib;

class Foo
{
        public int m_int = 0;
}

int
main(string[] args)
{
        Foo f;
        printf("foo %d\n", f.m_int);
        return EXIT_SUCCESS;
}