5 files changed, 8 insertions, 11 deletions
diff --git a/library/std/src/f16.rs b/library/std/src/f16.rs
index bdbe3e21994..0af69dff05a 100644
--- a/library/std/src/f16.rs
+++ b/library/std/src/f16.rs
@@ -1321,12 +1321,14 @@ impl f16 {
     /// ```
     /// #![feature(f16)]
     /// #![feature(float_erf)]
+    /// # #[cfg(reliable_f16_math)] {
     /// let x: f16 = 0.123;
     ///
     /// let one = x.erf() + x.erfc();
     /// let abs_difference = (one - 1.0).abs();
     ///
     /// assert!(abs_difference <= f16::EPSILON);
+    /// # }
     /// ```
     #[rustc_allow_incoherent_impl]
     #[must_use = "method returns a new number and does not mutate the original value"]
diff --git a/library/std/src/io/stdio.rs b/library/std/src/io/stdio.rs
index 318c3508221..661c422811a 100644
--- a/library/std/src/io/stdio.rs
+++ b/library/std/src/io/stdio.rs
@@ -239,6 +239,7 @@ fn handle_ebadf_lazy<T>(r: io::Result<T>, default: impl FnOnce() -> T) -> io::Re
 /// }
 /// ```
 #[stable(feature = "rust1", since = "1.0.0")]
+#[cfg_attr(not(test), rustc_diagnostic_item = "Stdin")]
 pub struct Stdin {
     inner: &'static Mutex<BufReader<StdinRaw>>,
 }
diff --git a/library/std/src/os/wasi/fs.rs b/library/std/src/os/wasi/fs.rs
index 42aada131da..34f0e89f2f1 100644
--- a/library/std/src/os/wasi/fs.rs
+++ b/library/std/src/os/wasi/fs.rs
@@ -162,13 +162,6 @@ pub trait FileExt {
         Ok(())
     }
 
-    /// Returns the current position within the file.
-    ///
-    /// This corresponds to the `fd_tell` syscall and is similar to
-    /// `seek` where you offset 0 bytes from the current position.
-    #[doc(alias = "fd_tell")]
-    fn tell(&self) -> io::Result<u64>;
-
     /// Adjusts the flags associated with this file.
     ///
     /// This corresponds to the `fd_fdstat_set_flags` syscall.
@@ -240,10 +233,6 @@ impl FileExt for fs::File {
         self.as_inner().as_inner().pwrite(bufs, offset)
     }
 
-    fn tell(&self) -> io::Result<u64> {
-        self.as_inner().as_inner().tell()
-    }
-
     fn fdstat_set_flags(&self, flags: u16) -> io::Result<()> {
         self.as_inner().as_inner().set_flags(flags)
     }
diff --git a/library/std/src/panic.rs b/library/std/src/panic.rs
index 61801db072a..22776ae2bc4 100644
--- a/library/std/src/panic.rs
+++ b/library/std/src/panic.rs
@@ -255,6 +255,7 @@ pub use crate::panicking::{set_hook, take_hook};
 #[stable(feature = "panic_any", since = "1.51.0")]
 #[inline]
 #[track_caller]
+#[cfg_attr(not(test), rustc_diagnostic_item = "panic_any")]
 pub fn panic_any<M: 'static + Any + Send>(msg: M) -> ! {
     crate::panicking::begin_panic(msg);
 }
diff --git a/library/std/src/process.rs b/library/std/src/process.rs
index fd0fd1cb755..bdd4844b651 100644
--- a/library/std/src/process.rs
+++ b/library/std/src/process.rs
@@ -217,6 +217,7 @@ use crate::{fmt, fs, str};
 ///
 /// [`wait`]: Child::wait
 #[stable(feature = "process", since = "1.0.0")]
+#[cfg_attr(not(test), rustc_diagnostic_item = "Child")]
 pub struct Child {
     pub(crate) handle: imp::Process,
 
@@ -2115,6 +2116,7 @@ impl Child {
     /// [`ErrorKind`]: io::ErrorKind
     /// [`InvalidInput`]: io::ErrorKind::InvalidInput
     #[stable(feature = "process", since = "1.0.0")]
+    #[cfg_attr(not(test), rustc_diagnostic_item = "child_kill")]
     pub fn kill(&mut self) -> io::Result<()> {
         self.handle.kill()
     }
@@ -2135,6 +2137,7 @@ impl Child {
     /// ```
     #[must_use]
     #[stable(feature = "process_id", since = "1.3.0")]
+    #[cfg_attr(not(test), rustc_diagnostic_item = "child_id")]
     pub fn id(&self) -> u32 {
         self.handle.id()
     }
@@ -2375,6 +2378,7 @@ pub fn exit(code: i32) -> ! {
 /// [panic hook]: crate::panic::set_hook
 #[stable(feature = "process_abort", since = "1.17.0")]
 #[cold]
+#[cfg_attr(not(test), rustc_diagnostic_item = "process_abort")]
 pub fn abort() -> ! {
     crate::sys::abort_internal();
 }