1 files changed, 31 insertions, 0 deletions
diff --git a/src/test/ui/lint/dead-code/leading-underscore.rs b/src/test/ui/lint/dead-code/leading-underscore.rs
new file mode 100644
index 000000000..d3582961b
--- /dev/null
+++ b/src/test/ui/lint/dead-code/leading-underscore.rs
@@ -0,0 +1,31 @@
+// run-pass
+// pretty-expanded FIXME #23616
+
+#![deny(dead_code)]
+
+static _X: usize = 0;
+
+fn _foo() {}
+
+struct _Y {
+    _z: usize,
+}
+
+enum _Z {}
+
+impl _Y {
+    fn _bar() {}
+}
+
+type _A = isize;
+
+mod _bar {
+    fn _qux() {}
+}
+
+extern "C" {
+    #[link_name = "abort"]
+    fn _abort() -> !;
+}
+
+pub fn main() {}