1 files changed, 54 insertions, 0 deletions
diff --git a/tests/ui/lint/dead-code/const-and-self.rs b/tests/ui/lint/dead-code/const-and-self.rs
new file mode 100644
index 00000000000..5c96e4d0ecb
--- /dev/null
+++ b/tests/ui/lint/dead-code/const-and-self.rs
@@ -0,0 +1,54 @@
+// check-pass
+
+#![warn(dead_code)]
+
+const TLC: usize = 4;
+
+trait Tr { fn doit(&self); }
+
+impl Tr for [usize; TLC] {
+    fn doit(&self) {
+        println!("called 4");
+    }
+}
+
+struct X;
+struct Y;
+struct Z;
+
+trait Foo<T> {
+    type Ty;
+    fn foo() -> Self::Ty;
+}
+
+impl Foo<Y> for X {
+    type Ty = Z;
+    fn foo() -> Self::Ty {
+        unimplemented!()
+    }
+}
+
+enum E {
+    A,
+    B, //~ WARN variants `B` and `C` are never constructed
+    C,
+}
+
+type F = E;
+
+impl E {
+    fn check(&self) -> bool {
+        match self {
+            Self::A => true,
+            Self::B => false,
+            F::C => false,
+        }
+    }
+}
+
+fn main() {
+    let s = [0,1,2,3];
+    s.doit();
+    X::foo();
+    E::A.check();
+}