Auto merge of #29083 - petrochenkov:stability3, r=alexcrichton

What this patch does:
- Stability annotations are now based on "exported items" supplied by rustc_privacy and not "public items". Exported items are as accessible for external crates as directly public items and should be annotated with stability attributes.
- Trait impls require annotations now.
- Reexports require annotations now.
- Crates themselves didn't require annotations, now they do.
- Exported macros are annotated now, but these annotations are not used yet.
- Some useless annotations are detected and result in errors
- Finally, some small bugs are fixed - deprecation propagates from stable deprecated parents, items in blocks are traversed correctly (fixes https://github.com/rust-lang/rust/issues/29034) + some code cleanup.

4 files changed, 12 insertions, 3 deletions

diff --git a/src/libstd/sys/unix/ext/fs.rs b/src/libstd/sys/unix/ext/fs.rs
index 5ef37ae51c9..d2a16b5de97 100644
--- a/src/libstd/sys/unix/ext/fs.rs
+++ b/src/libstd/sys/unix/ext/fs.rs
@@ -153,6 +153,7 @@ pub trait MetadataExt {
     fn blocks(&self) -> raw::blkcnt_t;
 }
 
+#[stable(feature = "metadata_ext", since = "1.1.0")]
 impl MetadataExt for fs::Metadata {
     fn dev(&self) -> raw::dev_t { self.as_raw_stat().st_dev as raw::dev_t }
     fn ino(&self) -> raw::ino_t { self.as_raw_stat().st_ino as raw::ino_t }
@@ -211,6 +212,7 @@ pub trait DirEntryExt {
     fn ino(&self) -> raw::ino_t;
 }
 
+#[stable(feature = "dir_entry_ext", since = "1.1.0")]
 impl DirEntryExt for fs::DirEntry {
     fn ino(&self) -> raw::ino_t { self.as_inner().ino() }
 }
@@ -253,6 +255,8 @@ pub trait DirBuilderExt {
     fn mode(&mut self, mode: raw::mode_t) -> &mut Self;
 }
 
+#[unstable(feature = "dir_builder", reason = "recently added API",
+           issue = "27710")]
 impl DirBuilderExt for fs::DirBuilder {
     fn mode(&mut self, mode: raw::mode_t) -> &mut fs::DirBuilder {
         self.as_inner_mut().set_mode(mode);
diff --git a/src/libstd/sys/unix/ext/mod.rs b/src/libstd/sys/unix/ext/mod.rs
index 5b9f36cbc37..b57e325089d 100644
--- a/src/libstd/sys/unix/ext/mod.rs
+++ b/src/libstd/sys/unix/ext/mod.rs
@@ -40,13 +40,13 @@ pub mod raw;
 /// Includes all extension traits, and some important type definitions.
 #[stable(feature = "rust1", since = "1.0.0")]
 pub mod prelude {
-    #[doc(no_inline)]
+    #[doc(no_inline)] #[stable(feature = "rust1", since = "1.0.0")]
     pub use super::io::{RawFd, AsRawFd, FromRawFd, IntoRawFd};
     #[doc(no_inline)] #[stable(feature = "rust1", since = "1.0.0")]
     pub use super::ffi::{OsStrExt, OsStringExt};
-    #[doc(no_inline)]
+    #[doc(no_inline)] #[stable(feature = "rust1", since = "1.0.0")]
     pub use super::fs::{PermissionsExt, OpenOptionsExt, MetadataExt, FileTypeExt};
-    #[doc(no_inline)]
+    #[doc(no_inline)] #[stable(feature = "rust1", since = "1.0.0")]
     pub use super::fs::{DirEntryExt};
     #[doc(no_inline)] #[stable(feature = "rust1", since = "1.0.0")]
     pub use super::process::{CommandExt, ExitStatusExt};
diff --git a/src/libstd/sys/unix/ext/process.rs b/src/libstd/sys/unix/ext/process.rs
index 3e7260f0757..e1111f25db7 100644
--- a/src/libstd/sys/unix/ext/process.rs
+++ b/src/libstd/sys/unix/ext/process.rs
@@ -107,18 +107,21 @@ impl AsRawFd for process::ChildStderr {
     }
 }
 
+#[stable(feature = "process_extensions", since = "1.2.0")]
 impl IntoRawFd for process::ChildStdin {
     fn into_raw_fd(self) -> RawFd {
         self.into_inner().into_fd().into_raw()
     }
 }
 
+#[stable(feature = "process_extensions", since = "1.2.0")]
 impl IntoRawFd for process::ChildStdout {
     fn into_raw_fd(self) -> RawFd {
         self.into_inner().into_fd().into_raw()
     }
 }
 
+#[stable(feature = "process_extensions", since = "1.2.0")]
 impl IntoRawFd for process::ChildStderr {
     fn into_raw_fd(self) -> RawFd {
         self.into_inner().into_fd().into_raw()
diff --git a/src/libstd/sys/unix/ext/raw.rs b/src/libstd/sys/unix/ext/raw.rs
index fa380abe6c5..8377e53f417 100644
--- a/src/libstd/sys/unix/ext/raw.rs
+++ b/src/libstd/sys/unix/ext/raw.rs
@@ -17,6 +17,8 @@
 #[stable(feature = "raw_ext", since = "1.1.0")] pub type pid_t = i32;
 
 #[doc(inline)]
+#[stable(feature = "raw_ext", since = "1.1.0")]
 pub use sys::platform::raw::{dev_t, ino_t, mode_t, nlink_t, off_t, blksize_t};
 #[doc(inline)]
+#[stable(feature = "raw_ext", since = "1.1.0")]
 pub use sys::platform::raw::{blkcnt_t, time_t};