1 files changed, 12 insertions, 0 deletions

diff --git a/src/test/ui/issues/issue-4542.rs b/src/test/ui/issues/issue-4542.rs
new file mode 100644
index 000000000..2386561c3
--- /dev/null
+++ b/src/test/ui/issues/issue-4542.rs
@@ -0,0 +1,12 @@
+// run-pass
+// pretty-expanded FIXME #23616
+
+use std::env;
+
+pub fn main() {
+    for arg in env::args() {
+        match arg.clone() {
+            _s => { }
+        }
+    }
+}