1 files changed, 25 insertions, 0 deletions
diff --git a/tests/ui/consts/const_in_pattern/no-eq-branch-fail.rs b/tests/ui/consts/const_in_pattern/no-eq-branch-fail.rs
new file mode 100644
index 000000000..fc80d51c7
--- /dev/null
+++ b/tests/ui/consts/const_in_pattern/no-eq-branch-fail.rs
@@ -0,0 +1,25 @@
+#![warn(indirect_structural_match)]
+
+struct NoEq;
+
+enum Foo {
+    Bar,
+    Baz,
+    Qux(NoEq),
+}
+
+// Even though any of these values can be compared structurally, we still disallow it in a pattern
+// because `Foo` does not impl `PartialEq`.
+const BAR_BAZ: Foo = if 42 == 42 {
+    Foo::Baz
+} else {
+    Foo::Bar
+};
+
+fn main() {
+    match Foo::Qux(NoEq) {
+        BAR_BAZ => panic!(),
+        //~^ ERROR must be annotated with `#[derive(PartialEq, Eq)]`
+        _ => {}
+    }
+}