1 files changed, 27 insertions, 0 deletions
diff --git a/src/test/ui/hygiene/auxiliary/unhygienic_example.rs b/src/test/ui/hygiene/auxiliary/unhygienic_example.rs
new file mode 100644
index 000000000..8e6e8f9b3
--- /dev/null
+++ b/src/test/ui/hygiene/auxiliary/unhygienic_example.rs
@@ -0,0 +1,27 @@
+#![crate_type = "lib"]
+
+extern crate my_crate;
+
+pub fn g() {} // (a)
+
+#[macro_export]
+macro_rules! unhygienic_macro {
+    () => {
+        // (1) unhygienic: depends on `my_crate` in the crate root at the invocation site.
+        ::my_crate::f();
+
+        // (2) unhygienic: defines `f` at the invocation site (in addition to the above point).
+        use my_crate::f;
+        f();
+
+        g(); // (3) unhygienic: `g` needs to be in scope at use site.
+
+        $crate::g(); // (4) hygienic: this always resolves to (a)
+    }
+}
+
+#[allow(unused)]
+fn test_unhygienic() {
+    unhygienic_macro!();
+    f(); // `f` was defined at the use site
+}