std: move FromInner etc. to sys

... and remove the `#[doc(hidden)]` in favour of making them `pub(crate)`.

Author: joboet

library/std/src/sys/mod.rs

@@ -37,3 +37,24 @@ pub mod thread_local;
 // FIXME(117276): remove this, move feature implementations into individual
 //                submodules.
 pub use pal::*;
+
+/// A trait for viewing representations from std types.
+pub(crate) trait AsInner<Inner: ?Sized> {
+    fn as_inner(&self) -> &Inner;
+}
+
+/// A trait for viewing representations from std types.
+#[cfg_attr(not(target_os = "linux"), allow(unused))]
+pub(crate) trait AsInnerMut<Inner: ?Sized> {
+    fn as_inner_mut(&mut self) -> &mut Inner;
+}
+
+/// A trait for extracting representations from std types.
+pub(crate) trait IntoInner<Inner> {
+    fn into_inner(self) -> Inner;
+}
+
+/// A trait for creating std types from internal representations.
+pub(crate) trait FromInner<Inner> {
+    fn from_inner(inner: Inner) -> Self;
+}

library/std/src/sys_common/mod.rs

@@ -23,32 +23,6 @@ pub mod wstr;
 
 // common error constructors
 
-/// A trait for viewing representations from std types
-#[doc(hidden)]
-#[allow(dead_code)] // not used on all platforms
-pub trait AsInner<Inner: ?Sized> {
-    fn as_inner(&self) -> &Inner;
-}
-
-/// A trait for viewing representations from std types
-#[doc(hidden)]
-#[allow(dead_code)] // not used on all platforms
-pub trait AsInnerMut<Inner: ?Sized> {
-    fn as_inner_mut(&mut self) -> &mut Inner;
-}
-
-/// A trait for extracting representations from std types
-#[doc(hidden)]
-pub trait IntoInner<Inner> {
-    fn into_inner(self) -> Inner;
-}
-
-/// A trait for creating std types from internal representations
-#[doc(hidden)]
-pub trait FromInner<Inner> {
-    fn from_inner(inner: Inner) -> Self;
-}
-
 // Computes (value*numerator)/denom without overflow, as long as both (numerator*denom) and the
 // overall result fit into i64 (which is the case for our time conversions).
 #[allow(dead_code)] // not used on all platforms