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-52078.rs | 24 ++++++++++++++++++++++++
 1 file changed, 24 insertions(+)
 create mode 100644 tests/ui/nll/issue-52078.rs

(limited to 'tests/ui/nll/issue-52078.rs')

diff --git a/tests/ui/nll/issue-52078.rs b/tests/ui/nll/issue-52078.rs
new file mode 100644
index 000000000..a2bcb91ac
--- /dev/null
+++ b/tests/ui/nll/issue-52078.rs
@@ -0,0 +1,24 @@
+// Regression test for #52078: we were failing to infer a relationship
+// between `'a` and `'b` below due to inference variables introduced
+// during the normalization process.
+//
+// check-pass
+
+struct Drain<'a, T: 'a> {
+    _marker: ::std::marker::PhantomData<&'a T>,
+}
+
+trait Join {
+    type Value;
+    fn get(value: &mut Self::Value);
+}
+
+impl<'a, T> Join for Drain<'a, T> {
+    type Value = &'a mut Option<T>;
+
+    fn get<'b>(value: &'b mut Self::Value) {
+    }
+}
+
+fn main() {
+}
-- 
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