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Add comment for the previous android bug fix

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LinkTed 2020-11-26 18:54:13 +01:00
parent 9b9dd4aeea
commit 8983752c12
1 changed files with 4 additions and 0 deletions
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4
library/std/src/sys/unix/ext/net/ancillary.rs
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@ -160,6 +160,8 @@ fn add_to_ancillary_data<T>(
previous_cmsg = cmsg; previous_cmsg = cmsg;
cmsg = libc::CMSG_NXTHDR(&msg, cmsg); cmsg = libc::CMSG_NXTHDR(&msg, cmsg);
cfg_if::cfg_if! { cfg_if::cfg_if! {
// Android return the same pointer if it is the last cmsg.
// Therefore, check it if the previous pointer is the same as the current one.
if #[cfg(target_os = "android")] { if #[cfg(target_os = "android")] {
if cmsg == previous_cmsg { if cmsg == previous_cmsg {
break; break;
@ -430,6 +432,8 @@ impl<'a> Iterator for Messages<'a> {
let cmsg = cmsg.as_ref()?; let cmsg = cmsg.as_ref()?;
cfg_if::cfg_if! { cfg_if::cfg_if! {
// Android return the same pointer if it is the last cmsg.
// Therefore, check it if the previous pointer is the same as the current one.
if #[cfg(target_os = "android")] { if #[cfg(target_os = "android")] {
if let Some(current) = self.current { if let Some(current) = self.current {
if eq(current, cmsg) { if eq(current, cmsg) {