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diff --git a/src/test/ui/proc-macro/auxiliary/derive-helper-shadowed-2.rs b/src/test/ui/proc-macro/auxiliary/derive-helper-shadowed-2.rs
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+++ b/src/test/ui/proc-macro/auxiliary/derive-helper-shadowed-2.rs
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+#[macro_export]
+macro_rules! empty_helper { () => () }