Merge branch 'inaddr-nocopy' into 'master'

do not derive Copy on in_addr struct

See merge request redox-os/relibc!1098

src/header/netdb/mod.rs

@@ -239,7 +239,7 @@ pub unsafe extern "C" fn gethostbyaddr(
         H_ERRNO.set(NO_RECOVERY);
         return ptr::null_mut();
     }
-    let addr: in_addr = unsafe { *(v as *mut in_addr) };
+    let addr: in_addr = unsafe { (*(v as *mut in_addr)).clone() };
 
     // check the hosts file first
     let mut p: *mut hostent;
@@ -277,7 +277,7 @@ pub unsafe extern "C" fn gethostbyaddr(
     host_aliases.push(ptr::null_mut());
     unsafe { HOST_ALIASES.unsafe_set(Some(_host_aliases)) };
 
-    match lookup_addr(addr).map(|host_names| host_names.into_iter().next()) {
+    match lookup_addr(addr.clone()).map(|host_names| host_names.into_iter().next()) {
         Ok(Some(host_name)) => {
             unsafe { _HOST_ADDR_LIST = addr.s_addr.to_ne_bytes() };
             unsafe {

src/header/netinet_in/mod.rs

@@ -16,7 +16,7 @@ pub type in_port_t = u16;
 
 /// See <https://pubs.opengroup.org/onlinepubs/9799919799/basedefs/netinet_in.h.html>.
 #[repr(C)]
-#[derive(Debug, Clone, Copy, Default)]
+#[derive(Debug, Clone, Default)]
 pub struct in_addr {
     pub s_addr: in_addr_t,
 }