2 files changed, 34 insertions, 0 deletions
diff --git a/src/test/ui/underscore-imports/auxiliary/duplicate.rs b/src/test/ui/underscore-imports/auxiliary/duplicate.rs
new file mode 100644
index 000000000..92d741b6a
--- /dev/null
+++ b/src/test/ui/underscore-imports/auxiliary/duplicate.rs
@@ -0,0 +1,14 @@
+// force-host
+// no-prefer-dynamic
+
+#![crate_type = "proc-macro"]
+
+extern crate proc_macro;
+
+use proc_macro::*;
+
+#[proc_macro_attribute]
+pub fn duplicate(_: TokenStream, input: TokenStream) -> TokenStream {
+    let clone = input.clone();
+    input.into_iter().chain(clone.into_iter()).collect()
+}
diff --git a/src/test/ui/underscore-imports/auxiliary/underscore-imports.rs b/src/test/ui/underscore-imports/auxiliary/underscore-imports.rs
new file mode 100644
index 000000000..c335336be
--- /dev/null
+++ b/src/test/ui/underscore-imports/auxiliary/underscore-imports.rs
@@ -0,0 +1,20 @@
+#[macro_export]
+macro_rules! do_nothing {
+    () => ()
+}
+
+mod m1 {
+    pub trait InScope1 {
+        fn in_scope1(&self) {}
+    }
+    impl InScope1 for () {}
+}
+mod m2 {
+    pub trait InScope2 {
+        fn in_scope2(&self) {}
+    }
+    impl InScope2 for () {}
+}
+
+pub use m1::InScope1 as _;
+pub use m2::InScope2 as _;