Rollup merge of #56941 - euclio:deny-libstd-resolution-failures, r=QuietMisdreavus

deny intra-doc link resolution failures in libstd

Fixes #56693.

Until we land a fix for the underlying issue (#56922), we can at least fix the failures in libstd so they don't propagate to downstream crates.

9 files changed, 24 insertions, 3 deletions

diff --git a/src/liballoc/lib.rs b/src/liballoc/lib.rs
index e00e430fab6..afa7a6f919d 100644
--- a/src/liballoc/lib.rs
+++ b/src/liballoc/lib.rs
@@ -72,6 +72,8 @@
        test(no_crate_inject, attr(allow(unused_variables), deny(warnings))))]
 #![no_std]
 #![needs_allocator]
+
+#![deny(intra_doc_link_resolution_failure)]
 #![deny(missing_debug_implementations)]
 
 #![cfg_attr(not(test), feature(fn_traits))]
diff --git a/src/liballoc/rc.rs b/src/liballoc/rc.rs
index 3fc70f4ac37..65a610b9d1e 100644
--- a/src/liballoc/rc.rs
+++ b/src/liballoc/rc.rs
@@ -843,6 +843,8 @@ unsafe impl<#[may_dangle] T: ?Sized> Drop for Rc<T> {
     /// drop(foo);    // Doesn't print anything
     /// drop(foo2);   // Prints "dropped!"
     /// ```
+    ///
+    /// [`Weak`]: ../../std/rc/struct.Weak.html
     fn drop(&mut self) {
         unsafe {
             self.dec_strong();
@@ -1422,9 +1424,10 @@ impl<T: ?Sized + fmt::Debug> fmt::Debug for Weak<T> {
 #[stable(feature = "downgraded_weak", since = "1.10.0")]
 impl<T> Default for Weak<T> {
     /// Constructs a new `Weak<T>`, allocating memory for `T` without initializing
-    /// it. Calling [`upgrade`][Weak::upgrade] on the return value always gives [`None`].
+    /// it. Calling [`upgrade`] on the return value always gives [`None`].
     ///
     /// [`None`]: ../../std/option/enum.Option.html
+    /// [`upgrade`]: ../../std/rc/struct.Weak.html#method.upgrade
     ///
     /// # Examples
     ///
diff --git a/src/liballoc/sync.rs b/src/liballoc/sync.rs
index 55737016608..948c36117a3 100644
--- a/src/liballoc/sync.rs
+++ b/src/liballoc/sync.rs
@@ -955,6 +955,8 @@ unsafe impl<#[may_dangle] T: ?Sized> Drop for Arc<T> {
     /// drop(foo);    // Doesn't print anything
     /// drop(foo2);   // Prints "dropped!"
     /// ```
+    ///
+    /// [`Weak`]: ../../std/sync/struct.Weak.html
     #[inline]
     fn drop(&mut self) {
         // Because `fetch_sub` is already atomic, we do not need to synchronize
@@ -1222,10 +1224,11 @@ impl<T: ?Sized> Clone for Weak<T> {
 #[stable(feature = "downgraded_weak", since = "1.10.0")]
 impl<T> Default for Weak<T> {
     /// Constructs a new `Weak<T>`, without allocating memory.
-    /// Calling [`upgrade`][Weak::upgrade] on the return value always
+    /// Calling [`upgrade`] on the return value always
     /// gives [`None`].
     ///
     /// [`None`]: ../../std/option/enum.Option.html#variant.None
+    /// [`upgrade`]: ../../std/sync/struct.Weak.html#method.upgrade
     ///
     /// # Examples
     ///
diff --git a/src/libcore/lib.rs b/src/libcore/lib.rs
index c8ad38c52db..2124458dc55 100644
--- a/src/libcore/lib.rs
+++ b/src/libcore/lib.rs
@@ -71,6 +71,7 @@
 
 #![no_core]
 #![deny(missing_docs)]
+#![deny(intra_doc_link_resolution_failure)]
 #![deny(missing_debug_implementations)]
 
 #![feature(allow_internal_unstable)]
diff --git a/src/libcore/mem.rs b/src/libcore/mem.rs
index afd9fcb1fba..0cde23cde40 100644
--- a/src/libcore/mem.rs
+++ b/src/libcore/mem.rs
@@ -984,6 +984,9 @@ impl<T> ManuallyDrop<T> {
     ///
     /// This function semantically moves out the contained value without preventing further usage.
     /// It is up to the user of this method to ensure that this container is not used again.
+    ///
+    /// [`ManuallyDrop::drop`]: #method.drop
+    /// [`ManuallyDrop::into_inner`]: #method.into_inner
     #[must_use = "if you don't need the value, you can use `ManuallyDrop::drop` instead"]
     #[unstable(feature = "manually_drop_take", issue = "55422")]
     #[inline]
diff --git a/src/libcore/slice/mod.rs b/src/libcore/slice/mod.rs
index 59c11b27329..193061457b5 100644
--- a/src/libcore/slice/mod.rs
+++ b/src/libcore/slice/mod.rs
@@ -877,6 +877,7 @@ impl<T> [T] {
     /// assert_eq!(iter.remainder(), &['l']);
     /// ```
     ///
+    /// [`chunks`]: #method.chunks
     /// [`rchunks`]: #method.rchunks
     /// [`chunks_exact`]: #method.chunks_exact
     #[stable(feature = "rchunks", since = "1.31.0")]
@@ -921,6 +922,7 @@ impl<T> [T] {
     /// assert_eq!(v, &[0, 2, 2, 1, 1]);
     /// ```
     ///
+    /// [`chunks_mut`]: #method.chunks_mut
     /// [`rchunks_mut`]: #method.rchunks_mut
     /// [`chunks_exact_mut`]: #method.chunks_exact_mut
     #[stable(feature = "rchunks", since = "1.31.0")]
diff --git a/src/libstd/io/buffered.rs b/src/libstd/io/buffered.rs
index 7ede050da6c..7aaf89cd0ff 100644
--- a/src/libstd/io/buffered.rs
+++ b/src/libstd/io/buffered.rs
@@ -294,7 +294,7 @@ impl<R: Seek> Seek for BufReader<R> {
     /// `.into_inner()` immediately after a seek yields the underlying reader
     /// at the same position.
     ///
-    /// To seek without discarding the internal buffer, use [`Seek::seek_relative`].
+    /// To seek without discarding the internal buffer, use [`BufReader::seek_relative`].
     ///
     /// See [`std::io::Seek`] for more details.
     ///
@@ -303,6 +303,9 @@ impl<R: Seek> Seek for BufReader<R> {
     /// seeks will be performed instead of one. If the second seek returns
     /// `Err`, the underlying reader will be left at the same position it would
     /// have if you called `seek` with `SeekFrom::Current(0)`.
+    ///
+    /// [`BufReader::seek_relative`]: struct.BufReader.html#method.seek_relative
+    /// [`std::io::Seek`]: trait.Seek.html
     fn seek(&mut self, pos: SeekFrom) -> io::Result<u64> {
         let result: u64;
         if let SeekFrom::Current(n) = pos {
diff --git a/src/libstd/io/error.rs b/src/libstd/io/error.rs
index d3844ebe19e..324852355b0 100644
--- a/src/libstd/io/error.rs
+++ b/src/libstd/io/error.rs
@@ -225,6 +225,9 @@ impl From<ErrorKind> for Error {
     /// let error = Error::from(not_found);
     /// assert_eq!("entity not found", format!("{}", error));
     /// ```
+    ///
+    /// [`ErrorKind`]: ../../std/io/enum.ErrorKind.html
+    /// [`Error`]: ../../std/io/struct.Error.html
     #[inline]
     fn from(kind: ErrorKind) -> Error {
         Error {
diff --git a/src/libstd/lib.rs b/src/libstd/lib.rs
index 9042cb3c72d..0d3de34fe64 100644
--- a/src/libstd/lib.rs
+++ b/src/libstd/lib.rs
@@ -222,6 +222,7 @@
 #![no_std]
 
 #![deny(missing_docs)]
+#![deny(intra_doc_link_resolution_failure)]
 #![deny(missing_debug_implementations)]
 
 // Tell the compiler to link to either panic_abort or panic_unwind