1 files changed, 24 insertions, 0 deletions

diff --git a/tests/ui/issues/issue-3121.rs b/tests/ui/issues/issue-3121.rs
new file mode 100644
index 000000000..4bf5b9b60
--- /dev/null
+++ b/tests/ui/issues/issue-3121.rs
@@ -0,0 +1,24 @@
+// run-pass
+#![allow(dead_code)]
+#![allow(non_camel_case_types)]
+
+#[derive(Copy, Clone)]
+enum side { mayo, catsup, vinegar }
+#[derive(Copy, Clone)]
+enum order { hamburger, fries(side), shake }
+#[derive(Copy, Clone)]
+enum meal { to_go(order), for_here(order) }
+
+fn foo(m: Box<meal>, cond: bool) {
+    match *m {
+      meal::to_go(_) => { }
+      meal::for_here(_) if cond => {}
+      meal::for_here(order::hamburger) => {}
+      meal::for_here(order::fries(_s)) => {}
+      meal::for_here(order::shake) => {}
+    }
+}
+
+pub fn main() {
+    foo(Box::new(meal::for_here(order::hamburger)), true)
+}