1 files changed, 16 insertions, 0 deletions
diff --git a/src/test/ui/proc-macro/derive-helper-shadowing-2.rs b/src/test/ui/proc-macro/derive-helper-shadowing-2.rs
new file mode 100644
index 000000000..5204d72b9
--- /dev/null
+++ b/src/test/ui/proc-macro/derive-helper-shadowing-2.rs
@@ -0,0 +1,16 @@
+// If a derive macro introduces a helper attribute with the same name as that macro,
+// then make sure that it's usable without ambiguities.
+
+// check-pass
+// aux-build:derive-helper-shadowing-2.rs
+
+#[macro_use]
+extern crate derive_helper_shadowing_2;
+
+#[derive(same_name)]
+struct S {
+    #[same_name] // OK, no ambiguity, derive helpers have highest priority
+    field: u8,
+}
+
+fn main() {}