1 files changed, 17 insertions, 0 deletions
diff --git a/src/test/ui/proc-macro/auxiliary/issue-39889.rs b/src/test/ui/proc-macro/auxiliary/issue-39889.rs
new file mode 100644
index 000000000..e7af66da7
--- /dev/null
+++ b/src/test/ui/proc-macro/auxiliary/issue-39889.rs
@@ -0,0 +1,17 @@
+// force-host
+// no-prefer-dynamic
+
+#![crate_type = "proc-macro"]
+
+extern crate proc_macro;
+use proc_macro::TokenStream;
+
+#[proc_macro_derive(Issue39889)]
+pub fn f(_input: TokenStream) -> TokenStream {
+    let rules = r#"
+        macro_rules! id {
+            ($($tt:tt)*) => { $($tt)* };
+        }
+    "#;
+    rules.parse().unwrap()
+}