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diff --git a/tests/rustdoc/private/macro-document-private-duplicate.rs b/tests/rustdoc/private/macro-document-private-duplicate.rs
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+//@ ignore-test (fails spuriously, see issue #89228)
+
+// FIXME: If two macros in the same module have the same name
+// (yes, that's a thing), rustdoc lists both of them on the index page,
+// but only documents the first one on the page for the macro.
+// Fortunately, this can only happen in document private items mode,
+// but it still isn't ideal behavior.
+//
+// See https://github.com/rust-lang/rust/pull/88019#discussion_r693920453
+//
+//@ compile-flags: --document-private-items
+
+//@ hasraw macro_document_private_duplicate/index.html 'Doc 1.'
+//@ hasraw macro_document_private_duplicate/macro.a_macro.html 'Doc 1.'
+/// Doc 1.
+macro_rules! a_macro {
+    () => ()
+}
+
+//@ hasraw macro_document_private_duplicate/index.html 'Doc 2.'
+//@ !hasraw macro_document_private_duplicate/macro.a_macro.html 'Doc 2.'
+/// Doc 2.
+macro_rules! a_macro {
+    () => ()
+}