Auto merge of #51885 - GuillaumeGomez:trait-impl-show-docs, r=Mark-Simulacrum,QuietMisdreavus

Trait impl show docs

Fixes #51834.

<img width="1440" alt="screen shot 2018-06-29 at 00 14 33" src="https://user-images.githubusercontent.com/3050060/42063323-6e6e8cc8-7b31-11e8-88ef-4dd2229df76c.png">

(You can see both commit changes in the screenshot 😄)

r? @QuietMisdreavus

3 files changed, 7 insertions, 15 deletions

diff --git a/src/liballoc/rc.rs b/src/liballoc/rc.rs
index 2d65aaecbd0..fcd683e5e87 100644
--- a/src/liballoc/rc.rs
+++ b/src/liballoc/rc.rs
@@ -806,9 +806,7 @@ unsafe impl<#[may_dangle] T: ?Sized> Drop for Rc<T> {
     ///
     /// This will decrement the strong reference count. If the strong reference
     /// count reaches zero then the only other references (if any) are
-    /// [`Weak`][weak], so we `drop` the inner value.
-    ///
-    /// [weak]: struct.Weak.html
+    /// [`Weak`], so we `drop` the inner value.
     ///
     /// # Examples
     ///
@@ -1173,9 +1171,8 @@ impl<T: ?Sized + Unsize<U>, U: ?Sized> CoerceUnsized<Weak<U>> for Weak<T> {}
 
 impl<T> Weak<T> {
     /// Constructs a new `Weak<T>`, without allocating any memory.
-    /// Calling [`upgrade`] on the return value always gives [`None`].
+    /// Calling [`upgrade`][Weak::upgrade] on the return value always gives [`None`].
     ///
-    /// [`upgrade`]: struct.Weak.html#method.upgrade
     /// [`None`]: ../../std/option/enum.Option.html
     ///
     /// # Examples
@@ -1321,9 +1318,8 @@ 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`] on the return value always gives [`None`].
+    /// it. Calling [`upgrade`][Weak::upgrade] on the return value always gives [`None`].
     ///
-    /// [`upgrade`]: struct.Weak.html#method.upgrade
     /// [`None`]: ../../std/option/enum.Option.html
     ///
     /// # Examples
diff --git a/src/liballoc/string.rs b/src/liballoc/string.rs
index aa821abb34c..837e17cf640 100644
--- a/src/liballoc/string.rs
+++ b/src/liballoc/string.rs
@@ -1927,9 +1927,7 @@ impl<'a> Add<&'a str> for String {
 
 /// Implements the `+=` operator for appending to a `String`.
 ///
-/// This has the same behavior as the [`push_str`] method.
-///
-/// [`push_str`]: struct.String.html#method.push_str
+/// This has the same behavior as the [`push_str`][String::push_str] method.
 #[stable(feature = "stringaddassign", since = "1.12.0")]
 impl<'a> AddAssign<&'a str> for String {
     #[inline]
diff --git a/src/liballoc/sync.rs b/src/liballoc/sync.rs
index ff45daef514..8b4231dbdf6 100644
--- a/src/liballoc/sync.rs
+++ b/src/liballoc/sync.rs
@@ -916,9 +916,7 @@ unsafe impl<#[may_dangle] T: ?Sized> Drop for Arc<T> {
     ///
     /// This will decrement the strong reference count. If the strong reference
     /// count reaches zero then the only other references (if any) are
-    /// [`Weak`][weak], so we `drop` the inner value.
-    ///
-    /// [weak]: struct.Weak.html
+    /// [`Weak`], so we `drop` the inner value.
     ///
     /// # Examples
     ///
@@ -1159,9 +1157,9 @@ 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`] on the return value always gives [`None`].
+    /// Calling [`upgrade`][Weak::upgrade] on the return value always
+    /// gives [`None`].
     ///
-    /// [`upgrade`]: struct.Weak.html#method.upgrade
     /// [`None`]: ../../std/option/enum.Option.html#variant.None
     ///
     /// # Examples