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>
---
 .../nll/ty-outlives/projection-where-clause-env.rs | 28 ++++++++++++++++++++++
 1 file changed, 28 insertions(+)
 create mode 100644 tests/ui/nll/ty-outlives/projection-where-clause-env.rs

(limited to 'tests/ui/nll/ty-outlives/projection-where-clause-env.rs')

diff --git a/tests/ui/nll/ty-outlives/projection-where-clause-env.rs b/tests/ui/nll/ty-outlives/projection-where-clause-env.rs
new file mode 100644
index 000000000..a41116232
--- /dev/null
+++ b/tests/ui/nll/ty-outlives/projection-where-clause-env.rs
@@ -0,0 +1,28 @@
+// Test that when we have a `<T as MyTrait<'a>>::Output: 'a`
+// relationship in the environment we take advantage of it.  In this
+// case, that means we **don't** have to prove that `T: 'a`.
+//
+// Regression test for #53121.
+//
+// check-pass
+
+trait MyTrait<'a> {
+    type Output;
+}
+
+fn foo<'a, T>() -> &'a ()
+where
+    T: MyTrait<'a>,
+    <T as MyTrait<'a>>::Output: 'a,
+{
+    bar::<T::Output>()
+}
+
+fn bar<'a, T>() -> &'a ()
+where
+    T: 'a,
+{
+    &()
+}
+
+fn main() {}
-- 
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