rustdoc: show implementations on `#[fundamental]` wrappers

Fixes #92940

1 files changed, 16 insertions, 0 deletions

diff --git a/src/test/rustdoc/impl-box.rs b/src/test/rustdoc/impl-box.rs
new file mode 100644
index 00000000000..a371db135cf
--- /dev/null
+++ b/src/test/rustdoc/impl-box.rs
@@ -0,0 +1,16 @@
+// https://github.com/rust-lang/rust/issues/92940
+//
+// Show traits implemented on fundamental types that wrap local ones.
+
+pub struct MyType;
+
+// @has 'impl_box/struct.MyType.html'
+// @has '-' '//*[@id="impl-Iterator"]' 'impl Iterator for Box<MyType>'
+
+impl Iterator for Box<MyType> {
+    type Item = ();
+
+    fn next(&mut self) -> Option<Self::Item> {
+        todo!()
+    }
+}