From 218caa410aa38c29984be31a5229b9fa717560ee Mon Sep 17 00:00:00 2001
From: Daniel Baumann <daniel.baumann@progress-linux.org>
Date: Wed, 17 Apr 2024 14:19:13 +0200
Subject: Merging upstream version 1.68.2+dfsg1.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
---
 tests/ui/specialization/assoc-ty-graph-cycle.rs | 25 +++++++++++++++++++++++++
 1 file changed, 25 insertions(+)
 create mode 100644 tests/ui/specialization/assoc-ty-graph-cycle.rs

(limited to 'tests/ui/specialization/assoc-ty-graph-cycle.rs')

diff --git a/tests/ui/specialization/assoc-ty-graph-cycle.rs b/tests/ui/specialization/assoc-ty-graph-cycle.rs
new file mode 100644
index 000000000..fc39b553a
--- /dev/null
+++ b/tests/ui/specialization/assoc-ty-graph-cycle.rs
@@ -0,0 +1,25 @@
+// run-pass
+
+// Make sure we don't crash with a cycle error during coherence.
+
+#![feature(specialization)] //~ WARN the feature `specialization` is incomplete
+
+trait Trait<T> {
+    type Assoc;
+}
+
+impl<T> Trait<T> for Vec<T> {
+    default type Assoc = ();
+}
+
+impl Trait<u8> for Vec<u8> {
+    type Assoc = u8;
+}
+
+impl<T> Trait<T> for String {
+    type Assoc = ();
+}
+
+impl Trait<<Vec<u8> as Trait<u8>>::Assoc> for String {}
+
+fn main() {}
-- 
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