diff --git a/src/bin/error_box_provide.rs b/src/bin/error_box_provide.rs
new file mode 100644
index 0000000..adaa698
--- /dev/null
+++ b/src/bin/error_box_provide.rs
@@ -0,0 +1,35 @@
+// https://github.com/rust-lang/rust/issues/117432
+
+#![feature(error_generic_member_access)]
+
+#[derive(Debug)]
+struct Foo;
+
+#[derive(Debug)]
+struct MyError {
+    foo: Foo,
+}
+
+impl std::fmt::Display for MyError {
+    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
+        write!(f, "MyError")
+    }
+}
+
+impl std::error::Error for MyError {
+    fn provide<'a>(&'a self, request: &mut std::error::Request<'a>) {
+        request.provide_ref::<Foo>(&Foo);
+    }
+}
+
+fn foo_provided<T: std::error::Error>(e: &T) -> bool {
+    std::error::request_ref::<Foo>(e).is_some()
+}
+
+fn main() {
+    let e = MyError { foo: Foo };
+
+    assert!(foo_provided::<MyError>(&e)); // ok
+    assert!(foo_provided::<&MyError>(&&e)); // ok
+    assert!(foo_provided::<Box<MyError>>(&Box::new(e))); // fails
+}