Generate missing source link on impl associated types

Author: GuillaumeGomez

src/librustdoc/html/render/mod.rs

@@ -1730,6 +1730,7 @@ fn render_impl(
                 let source_id = format!("{item_type}.{name}");
                 let id = cx.derive_id(&source_id);
                 write!(w, "<section id=\"{id}\" class=\"{item_type}{in_trait_class}\">");
+                render_rightside(w, cx, item, render_mode);
                 if trait_.is_some() {
                     // Anchors are only used on trait impls.
                     write!(w, "<a href=\"#{id}\" class=\"anchor\">§</a>");
@@ -1751,6 +1752,7 @@ fn render_impl(
                 let source_id = format!("{item_type}.{name}");
                 let id = cx.derive_id(&source_id);
                 write!(w, "<section id=\"{id}\" class=\"{item_type}{in_trait_class}\">");
+                render_rightside(w, cx, item, render_mode);
                 if trait_.is_some() {
                     // Anchors are only used on trait impls.
                     write!(w, "<a href=\"#{id}\" class=\"anchor\">§</a>");

tests/rustdoc/anchors.no_type_anchor2.html

@@ -1 +1 @@
-<section id="associatedtype.Y" class="associatedtype"><h4 class="code-header">pub type <a href="#associatedtype.Y" class="associatedtype">Y</a> = <a class="primitive" href="{{channel}}/std/primitive.u32.html">u32</a></h4></section>
+<section id="associatedtype.Y" class="associatedtype"><a class="src rightside" href="../src/foo/anchors.rs.html#45">source</a><h4 class="code-header">pub type <a href="#associatedtype.Y" class="associatedtype">Y</a> = <a class="primitive" href="{{channel}}/std/primitive.u32.html">u32</a></h4></section>