ffi.patch

--- src/ffi.rs.orig	2017-04-14 12:35:59.025213550 +0100
+++ src/ffi.rs	2017-04-14 12:36:38.286016787 +0100
@@ -1,4 +1,12 @@
 /* automatically generated by rust-bindgen */
+#![allow(non_camel_case_types, non_snake_case)]
+use c_types::fd_set;
+use c_types::hostent;
+use c_types::in_addr;
+use c_types::iovec;
+use c_types::sockaddr;
+use c_types::socklen_t;
+use libc::timeval;
 
 #[repr(C)]
 pub struct __BindgenUnionField<T>(::std::marker::PhantomData<T>);
@@ -26,7 +34,10 @@
 }
 pub type ares_socklen_t = socklen_t;
 pub type ares_ssize_t = isize;
-pub type ares_socket_t = ::std::os::raw::c_int;
+#[cfg(windows)]
+pub type ares_socket_t = ::std::os::windows::io::RawSocket;
+#[cfg(unix)]
+pub type ares_socket_t = ::std::os::unix::io::RawFd;
 pub type ares_sock_state_cb =
     ::std::option::Option<unsafe extern "C" fn(data:
                                                    *mut ::std::os::raw::c_void,
@@ -63,6 +74,9 @@
 impl Clone for ares_options {
     fn clone(&self) -> Self { *self }
 }
+impl Default for ares_options {
+    fn default() -> Self { unsafe { ::std::mem::zeroed() } }
+}
 #[repr(C)]
 #[derive(Debug, Copy, Clone)]
 pub struct ares_channeldata([u8; 0]);
@@ -378,7 +392,7 @@
     fn clone(&self) -> Self { *self }
 }
 #[repr(C)]
-#[derive(Debug, Copy)]
+#[derive(Copy)]
 pub struct ares_addrttl {
     pub ipaddr: in_addr,
     pub ttl: ::std::os::raw::c_int,