Rollup merge of #97617 - GuillaumeGomez:rustdoc-anonymous-reexports, r=Nemo157

Rustdoc anonymous reexports

Fixes #97615.

r? `@Nemo157`

Author: Dylan-DPC

Diff for: src/librustdoc/visit_ast.rs

@@ -286,8 +286,8 @@ impl<'a, 'tcx> RustdocVisitor<'a, 'tcx> {
                     self.visit_foreign_item(item, None, om);
                 }
             }
-            // If we're inlining, skip private items.
-            _ if self.inlining && !is_pub => {}
+            // If we're inlining, skip private items or item reexported as "_".
+            _ if self.inlining && (!is_pub || renamed == Some(kw::Underscore)) => {}
             hir::ItemKind::GlobalAsm(..) => {}
             hir::ItemKind::Use(_, hir::UseKind::ListStem) => {}
             hir::ItemKind::Use(path, kind) => {

Diff for: src/test/rustdoc/anonymous-reexport.rs

@@ -0,0 +1,22 @@
+#![crate_name = "foo"]
+
+// This test ensures we don't display anonymous (non-inline) re-exports of public items.
+
+// @has 'foo/index.html'
+// @has - '//*[@id="main-content"]' ''
+// We check that the only "h2" present is for "Bla".
+// @count - '//*[@id="main-content"]/h2' 1
+// @has - '//*[@id="main-content"]/h2' 'Structs'
+// @count - '//*[@id="main-content"]//a[@class="struct"]' 1
+
+mod ext {
+    pub trait Foo {}
+    pub trait Bar {}
+    pub struct S;
+}
+
+pub use crate::ext::Foo as _;
+pub use crate::ext::Bar as _;
+pub use crate::ext::S as _;
+
+pub struct Bla;