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.

3 files changed, 10 insertions, 2 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
     ///