1 files changed, 30 insertions, 0 deletions
diff --git a/tests/ui/pattern/usefulness/const-private-fields.rs b/tests/ui/pattern/usefulness/const-private-fields.rs
new file mode 100644
index 00000000000..06c832ca46a
--- /dev/null
+++ b/tests/ui/pattern/usefulness/const-private-fields.rs
@@ -0,0 +1,30 @@
+// check-pass
+//
+// Check that we don't ignore private fields in usefulness checking
+#![deny(unreachable_patterns)]
+
+mod inner {
+    #[derive(PartialEq, Eq)]
+    pub struct PrivateField {
+        pub x: bool,
+        y: bool,
+    }
+
+    pub const FOO: PrivateField = PrivateField { x: true, y: true };
+    pub const BAR: PrivateField = PrivateField { x: true, y: false };
+}
+use inner::*;
+
+fn main() {
+    match FOO {
+        FOO => {}
+        BAR => {}
+        _ => {}
+    }
+
+    match FOO {
+        FOO => {}
+        PrivateField { x: true, .. } => {}
+        _ => {}
+    }
+}