From cc230fb7636306e92c55c9c9b2ec9086cd2ebc5c Mon Sep 17 00:00:00 2001
From: reddevilmidzy <midzy0228@gmail.com>
Date: Wed, 3 Dec 2025 23:40:06 +0900
Subject: [PATCH] Added comment to `tests\ui\str\debug-print-basic-tuple.rs`

---
 tests/ui/str/debug-print-basic-tuple.rs | 1 +
 1 file changed, 1 insertion(+)

diff --git a/tests/ui/str/debug-print-basic-tuple.rs b/tests/ui/str/debug-print-basic-tuple.rs
index 89beaa222273..7e2b86f56293 100644
--- a/tests/ui/str/debug-print-basic-tuple.rs
+++ b/tests/ui/str/debug-print-basic-tuple.rs
@@ -1,3 +1,4 @@
+//! regression test for <https://github.com/rust-lang/rust/issues/3109>
 //@ run-pass
 pub fn main() {
     println!("{:?}", ("hi there!", "you"));