From 509859a91d65e88514f8ef9837b46d6286507015 Mon Sep 17 00:00:00 2001
From: Daiki Ihara <sasurau4@gmail.com>
Date: Tue, 1 Dec 2020 22:28:30 +0900
Subject: [PATCH] add test for issue-4355

---
 tests/source/issue-4355.rs | 13 +++++++++++++
 tests/target/issue-4355.rs | 13 +++++++++++++
 2 files changed, 26 insertions(+)
 create mode 100644 tests/source/issue-4355.rs
 create mode 100644 tests/target/issue-4355.rs

diff --git a/tests/source/issue-4355.rs b/tests/source/issue-4355.rs
new file mode 100644
index 00000000000..ffdc4cfe68d
--- /dev/null
+++ b/tests/source/issue-4355.rs
@@ -0,0 +1,13 @@
+impl Drop for LockGuard {
+    fn drop(&mut self) {
+        LockMap::unlock(&self.0.0, &self.0.1);
+    }
+}
+
+fn main() {
+    let _ = ((1,),).0.0;
+
+    let t1 = (1u8, 2u8);
+    let mut t2 = (t1, 3u8);
+    t2.1 = t2.0.1;
+}
diff --git a/tests/target/issue-4355.rs b/tests/target/issue-4355.rs
new file mode 100644
index 00000000000..ffdc4cfe68d
--- /dev/null
+++ b/tests/target/issue-4355.rs
@@ -0,0 +1,13 @@
+impl Drop for LockGuard {
+    fn drop(&mut self) {
+        LockMap::unlock(&self.0.0, &self.0.1);
+    }
+}
+
+fn main() {
+    let _ = ((1,),).0.0;
+
+    let t1 = (1u8, 2u8);
+    let mut t2 = (t1, 3u8);
+    t2.1 = t2.0.1;
+}