1 files changed, 17 insertions, 0 deletions
diff --git a/tests/ui/proc-macro/derive-union.rs b/tests/ui/proc-macro/derive-union.rs
new file mode 100644
index 000000000..e83eee093
--- /dev/null
+++ b/tests/ui/proc-macro/derive-union.rs
@@ -0,0 +1,17 @@
+// run-pass
+
+#![allow(unused_variables)]
+// aux-build:derive-union.rs
+
+#[macro_use]
+extern crate derive_union;
+
+#[repr(C)]
+#[derive(UnionTest)]
+union Test {
+    a: u8,
+}
+
+fn main() {
+    let t = Test { a: 0 };
+}