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/traits/inductive-overflow/lifetime.rs | 33 ++++++++++++++++++++++++++
 1 file changed, 33 insertions(+)
 create mode 100644 tests/ui/traits/inductive-overflow/lifetime.rs

(limited to 'tests/ui/traits/inductive-overflow/lifetime.rs')

diff --git a/tests/ui/traits/inductive-overflow/lifetime.rs b/tests/ui/traits/inductive-overflow/lifetime.rs
new file mode 100644
index 000000000..bf536d21c
--- /dev/null
+++ b/tests/ui/traits/inductive-overflow/lifetime.rs
@@ -0,0 +1,33 @@
+// Test that we don't hit the recursion limit for short cycles involving lifetimes.
+
+// Shouldn't hit this, we should realize that we're in a cycle sooner.
+#![recursion_limit="20"]
+
+trait NotAuto {}
+trait Y {
+    type P;
+}
+
+impl<'a> Y for C<'a> {
+    type P = Box<X<C<'a>>>;
+}
+
+struct C<'a>(&'a ());
+struct X<T: Y>(T::P);
+
+impl<T: NotAuto> NotAuto for Box<T> {} //~ NOTE: required
+//~^ NOTE unsatisfied trait bound introduced here
+impl<T: Y> NotAuto for X<T> where T::P: NotAuto {}
+impl<'a> NotAuto for C<'a> {}
+
+fn is_send<S: NotAuto>() {}
+//~^ NOTE: required
+//~| NOTE: required
+
+fn main() {
+    // Should only be a few notes.
+    is_send::<X<C<'static>>>();
+    //~^ ERROR overflow evaluating
+    //~| 3 redundant requirements hidden
+    //~| required for
+}
-- 
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