1 files changed, 9 insertions, 2 deletions
diff --git a/tests/ui/recursion/recursion-tail-call-no-arg-leak.rs b/tests/ui/recursion/recursion-tail-call-no-arg-leak.rs
index 234924307c3..fe10b890700 100644
--- a/tests/ui/recursion/recursion-tail-call-no-arg-leak.rs
+++ b/tests/ui/recursion/recursion-tail-call-no-arg-leak.rs
@@ -1,7 +1,14 @@
+//! This test verifies that tail call optimization does not lead to argument slot leaks.
+//!
+//! Regression test for: <https://github.com/rust-lang/rust/issues/160>
+
 //@ run-pass
-// use of tail calls causes arg slot leaks, issue #160.
 
-fn inner(dummy: String, b: bool) { if b { return inner(dummy, false); } }
+fn inner(dummy: String, b: bool) {
+    if b {
+        return inner(dummy, false);
+    }
+}
 
 pub fn main() {
     inner("hi".to_string(), true);