1 files changed, 12 insertions, 0 deletions
diff --git a/tests/ui/proc-macro/issue-39889.rs b/tests/ui/proc-macro/issue-39889.rs
new file mode 100644
index 000000000..69bfb4f3c
--- /dev/null
+++ b/tests/ui/proc-macro/issue-39889.rs
@@ -0,0 +1,12 @@
+// run-pass
+
+#![allow(dead_code, unused_macros)]
+// aux-build:issue-39889.rs
+
+extern crate issue_39889;
+use issue_39889::Issue39889;
+
+#[derive(Issue39889)]
+struct S;
+
+fn main() {}