1 files changed, 11 insertions, 0 deletions
diff --git a/tests/ui/foreign/foreign-mod-unused-const.rs b/tests/ui/foreign/foreign-mod-unused-const.rs
new file mode 100644
index 00000000000..7d79c30f469
--- /dev/null
+++ b/tests/ui/foreign/foreign-mod-unused-const.rs
@@ -0,0 +1,11 @@
+// run-pass
+#![allow(dead_code)]
+// pretty-expanded FIXME #23616
+
+mod foo {
+    extern "C" {
+        pub static errno: u32;
+    }
+}
+
+pub fn main() {}