#! stap -p2

function sockaddr_un(ptr)
{
    // Make sure multiple conflicting returns don't resolve a type.
    // (These are actually the same, but coming from different cast modules.)
    if (randint(2))
        return & @cast(ptr, "sockaddr_un", "<sys/un.h>");
    else
        return & @cast(ptr, "sockaddr_un", "<sys/socket.h><sys/un.h>");
}

probe begin
{
    // Test DWARF types returned from function calls,
    // even failing properly when the field doesn't exist.
    println( sockaddr_un(0) -> sun_family )
}