1 files changed, 10 insertions, 0 deletions
diff --git a/src/test/ui/lint/dead-code/type-alias.rs b/src/test/ui/lint/dead-code/type-alias.rs
new file mode 100644
index 000000000..35a7f125d
--- /dev/null
+++ b/src/test/ui/lint/dead-code/type-alias.rs
@@ -0,0 +1,10 @@
+#![deny(dead_code)]
+
+type Used = u8;
+type Unused = u8; //~ ERROR type alias `Unused` is never used
+
+fn id(x: Used) -> Used { x }
+
+fn main() {
+    id(0);
+}