From 64d98f8ee037282c35007b64c2649055c56af1db Mon Sep 17 00:00:00 2001
From: Daniel Baumann <daniel.baumann@progress-linux.org>
Date: Wed, 17 Apr 2024 14:19:03 +0200
Subject: Merging upstream version 1.68.2+dfsg1.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
---
 tests/ui/nll/issue-30104.rs | 40 ++++++++++++++++++++++++++++++++++++++++
 1 file changed, 40 insertions(+)
 create mode 100644 tests/ui/nll/issue-30104.rs

(limited to 'tests/ui/nll/issue-30104.rs')

diff --git a/tests/ui/nll/issue-30104.rs b/tests/ui/nll/issue-30104.rs
new file mode 100644
index 000000000..38850cd3f
--- /dev/null
+++ b/tests/ui/nll/issue-30104.rs
@@ -0,0 +1,40 @@
+// Regression test for #30104
+
+// check-pass
+
+use std::ops::{Deref, DerefMut};
+
+fn box_two_field(v: &mut Box<(i32, i32)>) {
+    let _a = &mut v.0;
+    let _b = &mut v.1;
+}
+
+fn box_destructure(v: &mut Box<(i32, i32)>) {
+    let (ref mut _head, ref mut _tail) = **v;
+}
+
+struct Wrap<T>(T);
+
+impl<T> Deref for Wrap<T> {
+    type Target = T;
+    fn deref(&self) -> &T {
+        &self.0
+    }
+}
+
+impl<T> DerefMut for Wrap<T> {
+    fn deref_mut(&mut self) -> &mut T {
+        &mut self.0
+    }
+}
+
+fn smart_two_field(v: &mut Wrap<(i32, i32)>) {
+    let _a = &mut v.0;
+    let _b = &mut v.1;
+}
+
+fn smart_destructure(v: &mut Wrap<(i32, i32)>) {
+    let (ref mut _head, ref mut _tail) = **v;
+}
+
+fn main() {}
-- 
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